Many of us have been requesting this feature since 2015 but it keeps getting closed due to lack of voting. Please take .000002 seconds to head over to this post and vote. https://community.spotify.com/t5/Live-Ideas/Desktop-Playlists-Resize-width-of-individual-columns/idc...
This feature is ESSENTIAL for fans of music where additional information is placed in the track title, for example Classical music (there are multiple movements with identical names except for the movement number, which is usually at the very end of the track title) and live music such as Grateful Dead recordings (show date and venue are placed after the track title).
Really this is basic functionality and Spotify has for some reason constantly ignored this request and I'm feeling personally attacked at this point.