Is there a file I could edit to change the default automatic size?
For now editing size in plasma edition settings just change the width of the column (so icons automaticaly adapt to it) but unable to have same taskbar like first screen (icon+text).
Solved: an idea comes to me after writing this (so, I let this problem if someone meet it too). Close all applications, that way it’s possible to right-click on an empty space, then click ‘show alternatives’ and choose ‘icons+text’.