Transition copy fails with clipboard access denied

[EdK-z]

ScxmlEditor v2.5.1.1749, Windows 10
In certain cases, when attempting to copy a transition, get error:
ERROR> Aug 15 15:46:49 COPY> Cannot open clipboard: Access is denied

Steps to invoke the problem:

1. Copy non-visual child from any state (eg. onEntry)
2. Paste into other state
3. Attempt to copy transition

• error is printed

The paste is required. If I just copy the child, then copy the transition, it still works.

This only applies to copying transitions. State and all other types of copies continue working normally.

[alexzhornyak]

Could not reproduce either with usage of menus or with usage of hotkeys

copy_transition.mp4

P.S. Maybe there is an issue of a specific complex scxml

[EdK-z]

It fails on an entirely fresh instance of editor, new unit (no project) ...
Looks like I don't even need to use copy at all, there's some sequence of events... maybe its just timing?...
My video capture doesn't capture menus... so you won't see this... I used menus to add the OnEntry and Log.
Then I used CTL-Click to create the transition.
Then I created the third state
Then I select the transition and pressed CTL-C.
Then you see the error at the bottom...

copy-error.mp4

[alexzhornyak]

copy_transition_2.mp4

Still can not catch. Ok, I will not close it and will check on other devices

[EdK-z]

It does seem to be related to timing somehow. Sometimes, if I just do CTL-C a few times, it'll finally work. Sometimes I have to use CTL-C on something else, then try the transition again and it works.
Here's my PC info...
Processor Intel(R) Xeon(R) W-10885M CPU @ 2.40GHz 2.40 GHz
Installed RAM 64.0 GB (63.6 GB usable)
System type 64-bit operating system, x64-based processor
Edition Windows 10 Pro for Workstations
Version 22H2
OS build 19045.3324
Experience Windows Feature Experience Pack 1000.19041.1000.0

[alexzhornyak]

Your PC is much more powerful than mine, maybe you are right about timings. I will try to test on such configuration