I am still having column resizing issues. Often the subject field is still being truncated. It happens in any folder i go to. Not always, but enough that i notice it. I used to simply click on the folder name a 2nd time and it would fix itself, but now that little trick no longer seems to work. I can manually change the width of the column. If i manually change the width, it seems to “remember” and it will keep that size no matter which folder i then switch to, including going back to the folder where I had initially made that change.
It will also truncate the From field as well. See screen cap 3
If i click refresh on the browser tab, it will reload and my manually resized columns revert back to being truncated again.
I am still on FF56.0.2 Windows 7 Pro. I have no desire to upgrade FF as i lose a lot of my plugins that no longer work or no longer work properly.