This code returns negative MaxSize on 100% dpi, since it overflows int.
I use that code to descale some sizes on runtime per suggestion on the forum, also I have seen similar code in Telerik sources. When control receives negative max size it becomes invisible. You may want to investigate this cases.
I use Telerik 2018.3.1016.20 with .Net 3.5 on Server 2008 R2 SP1.