Hi Thijs,
you have to raise a support ticket to mendix https://support.mendix.com/hc/en-us and I am seeing this issue many times in the forum questions
Thanks to some great help from a colleague, resolved this issue with creating a registry entry
(DWORD type entry, DisableHWAcceleration with value set to 1
in
Computer\HKEY_CURRENT_USER\SOFTWARE\Microsoft\Avalon.Graphics)
https://docs.microsoft.com/en-us/previous-versions/dotnet/netframework-4.0/aa970912(v=vs.100)?redirectedfrom=MSDN#disable-hardware-acceleration-option