# 8.3.3-RC1 Ghost designer sessions **URL:** \ **Category:** Ignition Early Access\ **Created:** [January 15, 2026, 2:05pm UTC](https://forum.inductiveautomation.com/t/8-3-3-rc1-ghost-designer-sessions/113315 "2026-01-15T14:05:25Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![jiml](https://avatars.discourse-cdn.com/v4/letter/j/779978/32.png) [@jiml](https://forum.inductiveautomation.com/u/jiml)\ **Post date:** [January 15, 2026, 2:05pm UTC](https://forum.inductiveautomation.com/t/8-3-3-rc1-ghost-designer-sessions/113315/1 "2026-01-15T14:05:25Z")
The ghost designers are present here also. Gateway is setup as redundant which from old post I know is a cause. Is there a solution other then rebooting the gateway? That don’t seem like a good option for most. ---
**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\ **Post date:** [January 15, 2026, 11:52pm UTC](https://forum.inductiveautomation.com/t/8-3-3-rc1-ghost-designer-sessions/113315/2 "2026-01-15T23:52:06Z")
They should expire eventually, but they're also not causing any significant harm (a tiny amount of memory, but no actual OS socket). We're actively working on the underlying issue, hopefully to be resolved in 8.3.4. ---
**Author:** ![jiml](https://avatars.discourse-cdn.com/v4/letter/j/779978/32.png) [@jiml](https://forum.inductiveautomation.com/u/jiml)\ **Post date:** [January 16, 2026, 12:18am UTC](https://forum.inductiveautomation.com/t/8-3-3-rc1-ghost-designer-sessions/113315/3 "2026-01-16T00:18:58Z")
It showed I had like 7 designer sessions open and would not let me save anything in designer Paul. ---
**Author:** ![jiml](https://avatars.discourse-cdn.com/v4/letter/j/779978/32.png) [@jiml](https://forum.inductiveautomation.com/u/jiml)\ **Post date:** [January 16, 2026, 12:39pm UTC](https://forum.inductiveautomation.com/t/8-3-3-rc1-ghost-designer-sessions/113315/4 "2026-01-16T12:39:23Z")
```python com.inductiveautomation.ignition.common.resourcecollection.ResourceCollectionNotFoundException: resource collection not found: resource collection not found: null at com.inductiveautomation.ignition.gateway.project.IgnitionProjectManager.lambda$getProjectProps$8(IgnitionProjectManager.java:243) at java.util.Optional.orElseThrow(:0) at com.inductiveautomation.ignition.gateway.project.IgnitionProjectManager.getProjectProps(IgnitionProjectManager.java:243) at com.inductiveautomation.ignition.gateway.project.ProjectsRpcImpl.canEditProject(ProjectsRpcImpl.java:560) at com.inductiveautomation.ignition.gateway.project.ProjectsRpcImpl.push(ProjectsRpcImpl.java:143) at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(:0) at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(:0) at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(:0) at java.lang.reflect.Method.invoke(:0) at com.inductiveautomation.ignition.gateway.rpc.RpcDelegate$DelegateRpcHandler.handle(RpcDelegate.java:275) at com.inductiveautomation.ignition.gateway.rpc.RpcRoutes.lambda$handle$1(RpcRoutes.java:209) at com.inductiveautomation.ignition.gateway.rpc.RpcRoutes.safelyHandle(RpcRoutes.java:225) at com.inductiveautomation.ignition.gateway.rpc.RpcRoutes.handle(RpcRoutes.java:209) at com.inductiveautomation.ignition.gateway.dataroutes.Route.service(Route.java:355) at com.inductiveautomation.ignition.gateway.dataroutes.RouteGroupImpl.service(RouteGroupImpl.java:117) at com.inductiveautomation.ignition.gateway.dataroutes.RouteGroupCollectionServlet.serviceInternal(RouteGroupCollectionServlet.java:152) at com.inductiveautomation.ignition.gateway.dataroutes.AbstractRouteGroupServlet.service(AbstractRouteGroupServlet.java:40) at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:614) at org.eclipse.jetty.ee10.servlet.ServletHolder$NotAsync.service(ServletHolder.java:1385) at org.eclipse.jetty.ee10.servlet.ServletHolder.handle(ServletHolder.java:751) at org.eclipse.jetty.ee10.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1622) at com.inductiveautomation.catapult.filters.GatewayFilter.doFilter(GatewayFilter.java:119) at jakarta.servlet.http.HttpFilter.doFilter(HttpFilter.java:97) at org.eclipse.jetty.ee10.servlet.FilterHolder.doFilter(FilterHolder.java:205) at org.eclipse.jetty.ee10.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1594) at org.eclipse.jetty.ee10.servlet.ServletHandler$MappedServlet.handle(ServletHandler.java:1555) at org.eclipse.jetty.ee10.servlet.ServletChannel.dispatch(ServletChannel.java:823) at org.eclipse.jetty.ee10.servlet.ServletChannel.handle(ServletChannel.java:440) at org.eclipse.jetty.ee10.servlet.ServletHandler.handle(ServletHandler.java:470) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:575) at org.eclipse.jetty.ee10.servlet.SessionHandler.handle(SessionHandler.java:717) at org.eclipse.jetty.server.handler.ContextHandler.handle(ContextHandler.java:1071) at org.eclipse.jetty.rewrite.handler.RewriteHandler$LastRuleHandler.handle(RewriteHandler.java:159) at org.eclipse.jetty.rewrite.handler.Rule$Handler.handle(Rule.java:108) at org.eclipse.jetty.rewrite.handler.HeaderPatternRule$1.handle(HeaderPatternRule.java:89) at org.eclipse.jetty.rewrite.handler.Rule$Handler.handle(Rule.java:108) at org.eclipse.jetty.rewrite.handler.HeaderPatternRule$1.handle(HeaderPatternRule.java:89) at org.eclipse.jetty.rewrite.handler.Rule$Handler.handle(Rule.java:108) at org.eclipse.jetty.rewrite.handler.HeaderPatternRule$1.handle(HeaderPatternRule.java:89) at org.eclipse.jetty.rewrite.handler.Rule$Handler.handle(Rule.java:108) at org.eclipse.jetty.rewrite.handler.HeaderPatternRule$1.handle(HeaderPatternRule.java:89) at org.eclipse.jetty.rewrite.handler.Rule$Handler.handle(Rule.java:108) at org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(RewriteHandler.java:143) at org.eclipse.jetty.server.Handler$Sequence.handle(Handler.java:805) at org.eclipse.jetty.server.Handler$Sequence.handle(Handler.java:805) at org.eclipse.jetty.server.Server.handle(Server.java:182) at org.eclipse.jetty.server.internal.HttpChannelState$HandlerInvoker.run(HttpChannelState.java:677) at org.eclipse.jetty.server.internal.HttpConnection.onFillable(HttpConnection.java:416) at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:322) at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105) at org.eclipse.jetty.io.SelectableChannelEndPoint$1.run(SelectableChannelEndPoint.java:53) at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.runTask(AdaptiveExecutionStrategy.java:480) at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.consumeTask(AdaptiveExecutionStrategy.java:443) at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.tryProduce(AdaptiveExecutionStrategy.java:293) at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.run(AdaptiveExecutionStrategy.java:201) at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:311) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:981) at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.doRunJob(QueuedThreadPool.java:1211) at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1166) at java.lang.Thread.run(:0) Ignition v8.3.3-rc1 (b2025122208) Java: Azul Systems, Inc. 17.0.17 ``` ---
**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\ **Post date:** [January 16, 2026, 4:22pm UTC](https://forum.inductiveautomation.com/t/8-3-3-rc1-ghost-designer-sessions/113315/5 "2026-01-16T16:22:32Z")
Well, yes, you're still subject to the underlying conditions of the bug. But you just have to relaunch the designer until the issue doesn't happen, there's no need to restart the gateway.