Errors when editing while Find window is open (in app)

Happens but not consistently. When i’m using the app (1.5.0) and search for something within the page cmd-F, if i leave the find modal open while editing in the window, and hit return within a paragraph, sometimes the after part of the paragraph doesn’t show up on the next line. It is blank. Once while editing with the Find window the section crashed with an error message pasted in.

it is not consistent but it has happened many times tonight so i have to be very careful to close the Find modal.