Not a very serious bug, but doesn’t look like expected behaviour either.
In ‘Wrap by window’ (Ctrl-3) mode with Split windows enabled width of LEFT pane is considered wrap width for both left and right panes.
Suppose you split window into 2 vertical panes like:
LEFT: 10\% wide
RIGHT: 90\% wide
Definitely right half is wider. But text in it will still be wrapped by width of left pane. So you’ll see lines awkwardly cut in the middle with LOTS of unused whitespace in the right part of right pane.
Version: EmEditor Professional, version 7.02.
This is the specification.