UI Scaling Issues Lightroom Classic Windows 10 on secondary display

[#1]

I just installed back LR Classic on my new laptop with a 4k resolution display.

LR works perfectly on my laptop monitor but things get weird and hard to use when using my second monitor which is 1920x1200.

Whichever Windows Scaling I use (and ticking the Windows automatic scaling), the UI is completly messed up. The menu is way too big, right click options are also way too big. 

Menus themselves are not only too small but completely unusable as some text is just weird or absent. (See attached pictures)

Any idea?

[#2]

I just installed back LR Classic on my new laptop with a 4k resolution display.

LR works perfectly on my laptop monitor but things get weird and hard to use when using my second monitor which is 1920x1200.

Whichever Windows Scaling I use (and ticking the Windows automatic scaling), the UI is completly messed up. The menu is way too big, right click options are also way too big. 

Menus themselves are not only too small but completely unusable as some text is just weird or absent. (See attached pictures)

Any idea?