Vim sets the width of the sign column to 2 with no possiblity to change that. It would be nice, if someone could change this to being variable (width of 1 or 2).
This issue made me aware of the fixed value (vim help 'signs.txt' doesn't mention an option to change the width value)
tomtom/quickfixsigns_vim#27

Anyone else here using the sign column who would be interested in this enhancement?