Lxde and xfce flutter

I noticed that there are rendering problems with flutter appimage apps.
Is this related to the framework of some desktops?
Ubuntu and Kubuntu work. Lubuntu does not work. xfce also does not work avlinux.
Has anyone noticed this too and how is this resolved?

It is working fine actually, it was a bad appimage build with the 3.7 and downgrading to 3.3.4 not properly. and coincidence that I was testing on non-buntu . av linux mx linux

Glad you could resolve the issue. Thanks for letting us know.