I have a situation with the Power Chart where it appears to be caching the initial tag list and not showing newly added tags.
Here’s the scenario.
Add a Power Chart control to a view
Set the config > tagBrowserStartPath to histprov:[history provider]:/drv:[system name]:[tag provider]
Launch the new view. The “Browse Tags” tree view displays the list of tags, as expected
Add a new tag to the provider being referenced in the tagBrowserStartPath
Come back to the new view. The “Browse Tags” tree view does not display the newly added tag. I have tried both the refresh button on the Power Chart as well as a manual browser refresh (F5).
Back in the project, clear the config > tagBrowserStartPath Power Chart property.
Back in the browser, go to the new view and drill into the Power Chart tag tree to the same provider initially used.
The new tag is now visible and will remain visible even after re-applying the initial tagBrowserStartPath value, as you would expect.
To me, this feels like the initial filtered result is being cached, and the only method that I’ve found to invalidate it is outlined in steps 6-8.
I just followed the request back to a method inside of the tag history files where we’re clearly caching results when we provide a start path. Thanks for reporting; I will open a ticket.
This hasn’t been fixed. It looks like for a workaround, you could try setting the start path to null, then your same path again - that should ‘bust’ the cache the tag historian is keeping.
While it was not noted in the release notes, I believe this was addressed in 8.1.3. That’s when we noticed that our ‘workaround’ was no longer needed anyway.
Huh; maybe it was fixed incidentally. All I can tell is the original bug ticket is still open in our system, and there’s no indication it should have been fixed in the meantime.
I believe I am seeing this issue as well in 8.1.26. I am assuming this was fixed because of the dates and maybe this is a new issue? My symptom is on the dashboard component. When we update the widgets property on a dashboard and that includes a power chart, the power chart will sometimes retain the previous data instead of refreshing. No other widget we have exhibits this behavior (tables, gauges, etc) only the power chart. If this is believed to have been fixed let me know and I will make a ticket. Thanks.