The window Webkinz opens to play the game won't stop "jumping" on my screen.
Webkinz is a game based off Flash that, on pressing "Play", will open a new window for the game to run on. However, when I press "Play" and this new window opens, it does this strange jumping glitch-out, the window constantly resizing from left to right across the screen. This ONLY occurs on the login screen, and in the past rare circumstances I managed to input my login information, this bouncing stops. I'd love to be able to play one of my favorite games again, so any help is great.
I have a video of this bug available here: https://twitter.com/CntrolCoreAngel/status/1209300243554197507
I've tried the following fixes: disabling hardware acceleration, disabling all addons, running in Safe Mode, reinstalling Firefox, updating Firefox
My specs are: Mac OS Mojave 10.14.3 Firefox 71.0
Moambuepyre
Opaite Mbohovái (1)
See if clearing cache helps:
Press Ctrl-Shift-Delete (Mac: Cmd-Shift-Delete) Set 'Time range...' to 'Everything' Untick all items except 'Cache' Clear, then restart FF