Problem with the messreading

Hello,
I'M French so, please, excuse me for my English, wich is not really fluent, especially in musics.
I've just discovered Musescore and I enjoy it.
But I've juste met a problem with it. This is the second time I face it : I create a partition with the time signature 3/4 (three quarter notes in one bar), record and close it. When I open it, I get an error message which reports me there are errors because the time signature is 4/4.
How can I fix it please ?

Thank you very much. Kind regards.

Quentin BAILLY

GIT commit: f51dc11