Blumentopferd that does fix SOME plugins from cropping, but not all. Especially when dragging between monitors and monitors of diff resolutions. Also, the plugins like Native Instruments, Korg, Waves are way too small and unusable. Also remember 4k screens are popular in 15" like in laptops, 27, 32, 48, 55, 65 which is why there should be proper scaling % options.
They still need to fix this properly like Ableton/Studio One/Bitwig et al.
Without a PROPER Steinberg fix we will have no HiDPI or blurry fonts… It is also unfortunate that many big plugin companies cannot update their older plugins (Native Instruments/Waves/Korg/etc), especially Native Kontact and Komplete Kontrol - I’ve asked!
However, its exponentially easier for a half dozen DAWs to work with legacy non-HiDPI aware plugins then redevelop the thousands of legacy plugins because many of the plugin developers + GUI asset artists are probably no longer working for the companies. Many plugins have a lot of hand drawn art to look like the equipment etc. that cannot scale easily like a vector based plugin.
Korg actually responded to my request to update to HiDPI and scaling their legendary plugins and say they will work on it, and they are one by one! Waves just has too many, so I doubt it’ll ever happen and Native Instruments I think is having financial problems but they definitely need to update Komplete, Komplete Kontrol, Kontakt, Massive at least IMO ASAP.