slava13 said

When message is received, there is nothing in preview pane. Not even buttons are visible. When double click on message - new window is blank. Only if click reply can see the actual message received.

UPDATE: RESTARTING IN SAFE MODE REMOVES THE ISSUE. Nothing else helps. How can I solve this and revert back to my normal?

No matter what I do - cannot maximize the reading pane.

Is this on a Mac?

Zenos said

Is this on a Mac?

Hi, no its on PC. This was after the latest update to 45. I had a great theme installed, which was disabled as not compatible with 45 and I removed it and don't remember name. That theme changed the appearance of many buttons.

Safe Mode - all is visible fine. Regular Mode - impossible to see. When double click on message - still grey screen. Only after clicking REPLY would show the actual message.