Not usually a person to rant about spacing and conventions but this is great.

4 devs, all using IntelliJ. Now IntelliJ auto-changes tabs to spaces which is nice, and GitHub doesn’t really care as long as the spacing is consistent. Now here is the fun part: 2 devs have 4 spaces per tab, 1 has 3 spaces, 1 has 5 spaces.
GitHub merge conflicts everyWHERE.

And yes it isn’t the old 2 vs 4 spaces. It’s 3 vs 4 vs 5 somehow