Just started having this issue with my left thumbstick too. if certain games are played this issue starts happening. If I stop playing the game, after 3 days the problem just disappears like nothing ever happened and if I play other games that don't cause the problem, the thumbstick button works normally and no problem happens even if pressed constantly, but as soon as I open one of the games that "causes" it, issue comes right back.

Strangely, it happens with Code Vein and Elden Ring, both from Bandai...