Just tried upgrading my Xubuntu 19.10 desktop to 20.04 and I'm now getting the same staircase effect. Video card is an AMD Radeon RX 5700 XT which is connected with a DisplayPort -> DVI-D cable to an ancient LG W2252TQ monitor with a resolution of, yes, 1680x1050. It is the only monitor connected.
Just thought I'd share. Rolling back to 19.10 now. I'll try again with the point release.
Just tried upgrading my Xubuntu 19.10 desktop to 20.04 and I'm now getting the same staircase effect. Video card is an AMD Radeon RX 5700 XT which is connected with a DisplayPort -> DVI-D cable to an ancient LG W2252TQ monitor with a resolution of, yes, 1680x1050. It is the only monitor connected.
Just thought I'd share. Rolling back to 19.10 now. I'll try again with the point release.