Factorio Forums

Normally in the settings -> interface -> UI scale, the max allowed to be set is 250%. However, using the default keybind ctrl-+ does not limit the amount of increase in UI scale that can be applied - it can be increased indefinitely. (Note that decreasing UI scale DOES have the limit matching the settings page.) Increasing the scale by hotkey should be limited to 250% per the settings page.

Hi,

Thank you for the report,
This is not a bug, the UI scale can be adjusted past the limits in the interface GUI in many ways, and we use it internally for many reasons