Lubuntu and Picom - little black corners at dropdown menu

[nudnik70]

Hi there,

just encountered these little black corners/tips at my dropdown menus. Is there a possibility to remove them? Question is also if that is caused by Picom or maybe by the QT Style…?

I’m on Lubuntu 25.04
QT-Style Breeze

[wolf314]

Let’s try the following:
featherpad ~/.config/picom.conf

There look for the line beginning with ‘corner-radius’ and set the value larger than zero, e.g. to 7:
corner-radius = 7;

Save the file and have a look at your dropdown menus.

[nudnik70]

@wolf314
thanks a lot, that solved it!