Last week there was a problem when the Escape, CTRL + A keys have stopped working in applications mail and calendar ( Notes Client Eng 10.0.1 FP2, Windows 10) .
In other applications, these keys and their combinations worked correctly.
It was not possible to close documents by pressing the Esc key, I could not mark all documents with the Ctrl + A keys. I had to use Shift + Esc to close the document. In the Basic client (start via nlnotes.exe) everything worked correctly.
If I deleted the “Workspace” directory in the DATA directory and restarted the Notes client, everything started again working.