Just select a bend and it will be interpreted as if you made a change
OS: Windows 10 (10.0),
MuseScore version (64-bit): 184.108.40.20699,
Open the score that contains the bend.
Select bend/release, bend/release/bend, pre-bend, pre-bend/release, custom.(From the second beat to the sixth beat of the attached file)
Select only, no change.
An asterisk is added to the file name displayed on the tab.
A dialog box will open prompting you to save on close.
This does not happen when you select a bend type that specifies "bend".
(First beat of attached file)