Bug within "share with" leave?

Valued team, developers, user,

having observed that, when within “share with” state, when using the back-arrow (top, left), to leave a list again, the app would close.

(nightly 20.2.2021, Android 4.4.2)

Forward a message to “saved messeges” caused program to close.
Opened again, trying to open “saved messages” closed again (having had saved messages above pinned chats traced. Open again, chat right put but message saved two times.