Wick Editor/Candlestick - You can crash the editor in one very specific way

[User_at_War1]

Has this bug been reported already?
No.

Describe the bug
Wick Editor can crashed (like turn into a white screen) by one unfixed bug that can be performed through a very specific procedure. It involves tweens and multiple clips in a frame that has tweens.

To Reproduce
I’m going to explain the steps to execute this bug as best as I can:

1. Go to any newer versions of Wick Editor or any one of its forks (as I believe the bug is prevalent in all newish Wick Editor forks, such as candlestick)
2. Create a new file just for testing purposes and insert something (such as a rectangle) into the canvas onto an empty frame. Make sure the frame is at least a length of 2 or more.
   
   
3. Add two or more tween stops (circled in red) in the frame. Their placement doesn’t matter.
   
4. Now with your new clip, copy and paste it (how many times you copy or paste it doesn’t matter). You can even add a whole new clip alongside your other clip, just have to be in the same frame.
   
   
5. Move the timeline playhead.
   
   This will caused every single clip of that frame to be convert into one singular clip.
   
   
6. Preview play the file (by clicking on the play button or pressing ‘k’ on your keyboard)
7. End the preview, and then finally pressing the undo button (or doing ctrl+z) once.
8. The editor had crashed when all you see is a white screen in your browser tab.

Expected behavior
Simple. The editor shouldn’t crash when an undo is performed. Instead, everything should resort back to where things (such as the state of the timeline and canvas) were left out in step 4.

*Computer Information

• OS: Windows
• Device Type: Desktop
• Browser: Chrome

Do you have a suggested solution to this issue? (ex. has another program fixed this bug a certain way? Are you familiar with where in the code base someone would need to fix this issue?)
This bug isn’t a huge deal, as this is something that doesn’t happen if you use the editor correctly.

Additional context Optional*
The only reason I found this bug was because I was messing around with the editor (not with its code though), seeing if I could spot any bugs.

[BaronAWC]

for some reason i could not get the crash to trigger. does using the candlestick test version (https://candlestickers.app/test/) do anything by chance?

[User_at_War1]

Try this:

For step 5, after moving the timeline playhead, delete a clip, as the clips didn’t actually convert to one singular clip when I went to test it out again.

Continue on with the final steps, and the editor should end up crashing (no matter what device you’re on).

The bug still occurred in the test version of candlestick.

Example:

If you didn’t see it, the two clips didn’t actually become one unified clip, rather, moving the timeline playhead along the frame caused the two clips to have the same X and Y axes values. So when I thought I’ve deleted one clip with all other clips in it (screenshot 1), in reality I’ve only deleted the clip on the front layer, leaving me with one clip.

1. 
   2.
   

[BaronAWC]

ah, now i can reproduce it - thanks for the detailed report, will look into it

(it seems like you need to do the copy and paste at least twice, so that there are 3+ elements)