So read the topic where that was reported. If the issues are the light graphical lines, for me personally I can tolerate a minor glitch like that, in my 26 contiguous years of using Cubase I have found that things like that get fixed.
You have to set your expectations to fit within your personal risk tolerance. No software can guarantee every detail of future compatibility, and in any case Steinberg provides that you can sell your license without cost to you if you discover after a couple years it doesn’t work for you.
Cubase is sleek and powerful in terms of midi functionality, but you’ll have to learn a thing or two in order to use them.
I recommend that when you consider advice from others here, give more weight to longtime members whose post history you can browse like (but not limited to) @Brian_Roland, @Scab_Pickens, @raino @mkok @Ozan_Colakoglu
Also see the Forum Guide (New here? Read this.) so you can format your posts using the forum built-in quote functions etc.