Copy and paste (of unchanged) Template Canvas data via Dataset Viewer results in corrupted object

Ignition
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1

I am using Template Canvas to provide a list of simple document-link templates (for user to select from list of documents to open in a popup, for PDFviewer object to then open). I manually created four (4) rows using right-click → Customizers → Template Canvas Customizer. This works okay, however one can’t really insert rows or modify row order from this interface (that I know of).

So, I tried to get at the object data via Property Editor → Data → Templates (as shown in tutorial video) and then I pull up the Dataset Viewer window and use Copy to Clipboard button.

When I create a copy of my Template Canvas object and repeat above, but instead use Paste from Clipboard (without changing clipboard in ANY way), the object is corrupted. I need assistance to understand why that is and how to work around it.

I saved contents of the clipboard/Template Canvas to file, below:
template_canvas_that_wont_paste.txt (1.6 KB)
It looks like rows are preserved but data is lost during pasting operation. Here’s what they look like side by side:

original_and_corrupted_objects
original_and_corrupted_objects1063×395 21.1 KB

Underlying template is very simple:

document_template_view
document_template_view1004×60 2.56 KB
document_template_properties
(background color is white for category=true or grey otherwise)

I’m on 7.9.12 (b2019070213), under Windows 10 enterprise.

2

The problem is the backslashes in your Path parameter are being treated as escape sequences, because for some reason they’re not being properly escaped. I can’t reproduce in 8.1.X; this might be a fixed bug. If you upgrade to latest 7.9, there’s changes made to how the JSON encoding is done for the custom properties that may have been what fixed this.

3

Unfortunately, updating to 7.9.17 didn’t fix issue.

Curiously, every time I “Paste from Clipboard” in Template Canvas → Dataset Viewer, it blindly truncates 2 back-slashes (this is repeatable) , until none are left and then it throws up a “java.io.IOException: CSV invalid: row #2 has incorrect column count. Found 16, expected 8.”

I can ‘game’ “Paste from Clipboard” by simply doubling # of back-slashes (paste operation blindly halves the count) but doesn’t work for repeat operations.

Likely, I will swap to “/” and then use a script to rewrite the path before “using” it.

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