I’ve been trying out Candlestick, and it’s a really great fork of Wick Editor.
However, I noticed that when I set up a clip in the timeline for tweening, a blue box appears around the clip. This box also appears when I render as a PNG sequence.
Is there any way to turn this off? Or is this just a glitch?
just click the 9 key
Its an if statement that has been commented out in the wick code. It needs to be sorted by the developers. I’ve fixed in my fork but not ready for public yet.
L
oh, you just press the 9 key and its gone, i didnt think it would be that hard 
This is a visual thing made to show bounding boxes. You can stop it from appearing by pressing the 9 key on the editor.
i did notice that the editor never really teaches you that you can hide the clip borders. for now you can only toggle with 9 but we should probably add a button toggle in a future update.
also as luke pointed out, if you are on candlestick’s test website, there is a bug that forces the box to always show, even in playback and exports - that will be fixed before release.
