[Lazarus] Maybe it's TreeView hi-dpi bug on Linux?

[AlexeyT]

Hi

https://github.com/Alexey-T/CudaText/files/3438082/cudatext_hidpi.zip

This is video with bug of CudaText on Linux on hi-dpi. Details: 
https://github.com/Alexey-T/CudaText/issues/2099

On video you see some gray "panel entity" on the bottom of TreeView (ie 
Snippet Panel plugin of CudaText). I cannot test hi-dpi on Linux. I 
cannot repro this on Win10. Any ideas? Maybe Treeview has some internal 
panel which is scaled badly?

-- 
Regards,
Alexey