Visual Bugs

[tomcrane]

(Getty comments)

While playing with different aspects of CanvasPanel, we did find interesting moments where tiles didn’t load, there were weird visual rendering issues, or jumpiness in panning or zooming. We recognize this is unfinished software, but wanted to pass it on two examples below:

(Video TBC - no longer available?)

[abrin]

here's the video
https://user-images.githubusercontent.com/192686/173153799-55bf377f-f2f0-4372-8b1c-c470c694ac09.mov

[stephenwf]

The only time I've found this bug recently is by compositing another browser feature on top of the HTML Canvas (e.g. a border radius). This causes the clearRect() calls to stop working for some unknown reason in some browsers/OS. Need to keep an eye out for a consistent replication to try and fix or find a workaround.