I've got some of these cheap OLED displays from AliExpress and it worked out of the box! :-)
I read the Wiki page and know that OLED support is only basic at the moment.

I'm using a Matek F405-WING with latest iNav Release 2.5.1

There seems to be some "bar" or graphics glitch on the bottom of the screen. I hope It's not a feature I don't understand... Besides that, the display seems to work fine.

Any chances or ideas of fixing this? Happy to provide more information, although apart from the pictures and the sellers information, my knowledge about the display module itself is really limited:
https://www.aliexpress.com/item/32896971385.html

I've tested the displays before using them on my wing, with an Arduino and the whole screen was "accessible" (no bars).