When my students are drawing their on costumes in the paint editor, whenever they use the paintbucket to fill, when they click on any action after that, their work gets deleted.
For example,
• draw a circle
• fill circle
• click on line tool
Everything erases.
It seems to only happen after the fill tool is used.
Yeah, the paint editor is really meant for quick editing. If you want a much better image editor that works much much better, then you should use an external program. The paint editor is on their very long list (and is something that severely needs a rewrite).
This is not Snap's problem but one of several known Canvas bugs in the current Chrome version that will be fixed in (one of) the next releases. It's already fixed in Chrome canary.