Undo | Redo Button Please
I am typing a lot on my phone using OneNote application.
When suddenly my phone select all the words automatically,
and I accidentally pressed space bar which wiped out my 3 pages of work.
We are pleased to inform you that this feature has been added to OneNote for Windows 10 as part of the May 2017 update.
You should now be able to undo and redo in OneNote for Windows 10.
For more information please reference the following article:
Thank you for helping us shape OneNote for Windows 10!
-The OneNote Team
Maybe they listened to you, because there is an undo button at the top left of the program window.