Pixelated icons in LO 6 on Win 10 HiDPI (regression?)

I just installed LO 6, upgrading my previous 5.2 installation, on a Surface Pro 3 running Windows 10. Now all icons in toolbar, sidebar, menus, etc. are blurry (except those from Zotero toolbar and TexMath). I am almost sure the 5.2 did not have this issue. Has anyone found a fix for this? Can anyone confirm this is a regression (did not occur in previous version

(edit: activated screenshot)

See answer to question 126419