Bug? Custom Switch naming on unit can produce out of bounds error

[moerker]

The problem happens if the custom name uses all of its 10 characters, and advancing one additional place (to an 11th character) by using the Cursor (control B). Pressing „Store“ results in the garbeled name as seen below. This persists until you are deleting the character explicit.
Firmware is 4.01.

I attached an image showing the result.