Often people want to work on the same Construct project as a team. Construct supports saving projects in a folder structure, where each part of the project is s...
This is wrong, on page 2:
"UI state files
[...]Basically, the file is for you only and is of no interest to the rest of the team."
The projectfiles.uistate.json file contains information about the array files, specifically the name of the rows and columns. If this file is not sent to the team, they will see the rows and columns being numbered instead of whatever name they had.
So the .gitignore file can have these two lines:
*.uistate.json
!projectfiles.uistate.json
The first one ignores all files ending with .uistate.json, the 2nd makes an exception to still have array column/row info.