Then to further investigate this and possibly fix it (if comes from software) we would need to ask for the source of the panel, I couldn’t find it
DevTerm/devterm-4.19_v0.1.patch at main · clockworkpi/DevTerm · GitHub panel-cwd686.c should be called.
This kind of struct should be the thing we should check linux/panel-simple.c at master · torvalds/linux · GitHub
Thats my guesses, never went that deep into the kernel, but would be fun.
EDIT: I was looking at the wrong path, apparently the patch contains the source DevTerm/kernel-004-panel.patch at 5465b210e44344e8d8261390b910e46781a7316f · clockworkpi/DevTerm · GitHub