Buffers / windows are kept being dimmed sometimes

[blueyed]

This might be related to some autocommand not being triggered, e.g. when going through Ctrl-P and the buffer is dimmed in another tab etc already: when being displayed it is still dimmed.
set cc=80 fixes this.

We might be able to detect this with e.g. another autocommand on CursorHold, which could be used for debugging in general, too: add a note in case the current buffer is not the expected one.

[EdmundsEcho]

I noticed the buffer not changing (remains in inactive state) when the buffer number is #1. All the other buffers work. I can close the #1 buffer to have the plugin work as expected. I can reopen the first buffer (vim uses the original buffer id), and watch the bug appear again.

Furthermore, when I restart vim and load a previously saved session, the bug fires up again with the buffer with the lowest buffer id.

(buffer ids retrieved using :buffer)