Scaler 2 GUI in Ableton Live 11 messed up

When I am using Scaler 2 in Ableton Live 11 suite,the GUI of Scaler 2 is only showing a part of the plugin
Behind Scaler 2 it is black,I have to click on Scaler to to resize it . Then the whole plugin is visible
Not sure if I have missed a setting or something
Sorry is this sounds vague,not too good at explaining this
Appreciate the help on this,thank you

What OS are you on? What computer? Thanks for any info.
You should probably try disabling OpenGL.

Sorry I forgot to add,I was getting ready for work when I posted
Windows 10 64bit, Dell PC
Yes your solution worked,thank you ,disable OpenGL rendering