Thank You for Your answer!
I mean, sometimes (or mostly) You want to see the renamed or tagged names in the playlist itself when You search for some clip that You want to add it’s content to the timeline. If You work with long list of clips, it doesn’t really help if the comment is in other window. In case You need to locate some renamed or commented clip, You have to switch to the Properties tab to check properties of every clip in the list, clip by clip, to find the desired one. Maybe, just as suggestion, it would be nice to choose columns’ content in the PlayList. Thus, the editor could choose which field of Properties is shown for him.
And the other issue is dividing the playlist by folders or bins. Working on projects that have more than one shooting day or one memory card - it is important to keep all the rushes in the original backuped folders with their original, camera generated file names. But depending on the camera model, if You will import clips from two or more memory card’s camera backup folders, You will have in the playlist some similar file names. For example: I had long day shootings and filled up two memory cards in the same day (same date). Camera starts every new card with 00000.MTS (Sony’s NXCAM). So, importing both shooting days will result in two 00000.MTS files, two 00001.MTS, two 00002.MTS, etc. Grabbing STREAM folder to the Playlist ‘pours’ the included *.MTS files to the playlist, without keeping them into the folder. I could sort them by date, but (another bug?) if I changed the speed of the clip, the date disappears… So, to conclude - I can’t change the clip names in the playlist to make them more informative for myself without affecting the original file name. I can’t see in the playlist tab any comments or special clip names, but only in Properties tab. There is no separation on bins or folders, that makes very difficult to navigate on playlist if You have many clips from many memory cards in it. Sorry for longread.
Thank You a lot! Very glad and proud to be useful for the Community and to make ShotCut better and better 
And please refer to my long answer to Hudson555x. Especially, about switching and highlighting active (focused) sub-window and ‘mouseless’ editing. FYI, I’m working on Linux Mint 20.2 Xfce 4.16.0 xfwm4 LightDM with Shotcut 21.09.20 Qt 5.15.2 in Fusion Dark Theme.
Update: Strange, but I made another try and now I do see the changed Clip Name from the Properties tab in the Playlist Tab… I didn’t see it in my prevoius try…