I considered adding several reports, but I thought it would be better to describe these issues together and split up later.

I'm using zsh 5.2 with several oh-my-zsh plugins, plus powerline, on Linux. I have configured extraterm with Fira Code Retina.

First problem: I get frames created all the time. After first starting extraterm, I set all the Frame checkboxes on the Frames page, but I didn't create any new rules. However, for instance running ll renders a frame. I have not found a command that does not create a frame.

This leads to problem two: it seems that each frame resets the terminal. The behavior varies a bit - sometimes the terminal is reset and the new frame is shown at the top of the output, followed by the prompt. I can see this behavior with ll, for instance. Sometimes, I can briefly see a frame popping up before the terminal resets, and then I'm left with just the new prompt at the top. This happens with a simple cd, for instance.

Finally, the rendering of frames is incorrect in that the title bar of the frame partially covers the first line of text inside it:

Please let me know if I can help with further details or debugging.