A simple Google Image search will show a lot of icons related to "Undo & Redo", and interestingly, most of them, if not all are round. Take a look at the ones Microsoft Office uses: And some o
Redo and undo icon stock vector. Illustration of redo - 170574216
editor - Why are the Undo and Redo arrow icons commonly round? - User Experience Stack Exchange
Undo Redo Icon #390990 - Free Icons Library
Use Step Sequencer with Drum Machine Designer in Logic Pro for Mac - Apple دعم (BH)
Undo and redo edits in Logic Pro for Mac - Apple Support
material design - Cross or left arrow to return to the previous page? - User Experience Stack Exchange
editor - Why are the Undo and Redo arrow icons commonly round? - User Experience Stack Exchange
editor - Why are the Undo and Redo arrow icons commonly round? - User Experience Stack Exchange
dark patterns - Should navigation arrows function very differently depending on context? - User Experience Stack Exchange