Canvas drawing disappears when tab loses focus for too long

[KCarlile]

Background

The drawing will disappear from the canvas if a tab is left without focus for too long. This could be related to Chrome dumping memory for that tab, but the rest of the page remains fine, so it's not like what I've seen with YouTube pages sitting for too long when Chrome dumps the memory for them. In that case, the entire page refreshes upon re-focus.

Acceptance Criteria

• The cause of the disappearing drawing is determined
• A workaround, fix, or documentation solution is determined and implemented

Approach

• TBD

Notes

TBD

[KCarlile]

I noticed that there were some canvas.beginPath(); calls without a closing canvas.closePath(); call. I've now closed all of those and it seems like the canvas disappearing issue may be resolved. Those changes are in commit 02586d2.

Shoot, this issue is still happening. 😐