Atom editor on Arch (KDE 5 Plasma) not responding on mouseover?

Question

KDE

Hey! I pick arch. Installed the editor from github atom. Launched, everything is ok. But here the editor does not respond to mouse hover. I point to the tab - the cross does not appear. I click and it appears.
I hover over the code zone - the mouse does not change to I . I click - it changes.
Maybe someone had something similar?
PS: took atom from AUR ( https://aur.archlinux.org/packages/atom-editor/)