Cec remote problem with raspberry pi

Hi everybody

This is my first post, and hope there’s somebody who can help me in this trange issue I have.

I have a Panasonic TV, and used CEC without problems until last week. The problem is that CEC is working perfect on every place of OSMC but not when I get into VIDEO or series menu, I can’t use back button on my remote, it just stopped working, but it’s working when I go into any other place like confirguration or anywhere else…

Is there somebody who could help me?