Issue when adding an insert to a channel

Hi there,
Since upgrading to Cubase 11 a few weeks back from 10 on windows 10 I seem to have a strange bug on projects (or something has changed) which stops me from being able to add an active Insert to a channel. It lets you add a vst effect in pre but wont let me active any of them… Whether they are third party or Cubase built in ones it just wont let me at all. Has anyone else experience this issue? Also, when you do add an none active effect, it wont let you remove it at all from the channel. It wont let me click on it.

Thank you

Try turning off the Automation Read button