Making a GIF with four frames. First three are 1 second delay; fourth is a 2.5 second delay. After exporting, the delays aren't correct - the third panel gets a 3 second delay, and then on the second loop, the first panel gets a 4 second delay. Tried multiple exports, quitting and remaking the GIF, using different frames, etc. Installed the 21.0.1 release.