document frozen with no cursor until toggle of Light / Dark mode. WIN11, Bielefeld

[digbyphonic]

windows 11; latest version, Bielefeld theme.

i have found an issue when opening a file in a new tab where the document is unresponsive.
fix has been to re-open the program.
i've stumbled upon an alternative fix: toggling Light / Dark mode immediately displays the expected flashing cursor and allows work to continue.

in case this is of interest?
thank you.