Measure Number behave strangely when inserting Section break onto Horizontal Frame

OS: macOS High Sierra (10.13),
Arch.: x86_64, MuseScore version (64-bit): 3.5.0.27580,
revision: b5add95

It happens also in v3.4.2

Step to reproduce: (see attached file)
1.Insert horizontal Frame (Add->Frames->Insert Horizontal Frame)
2.Put Section break onto the Horizontal Frame
3.Input the note in second or later measures in second system

Result:
Measure number on beginning of the second system is changed from 1 to 5
*Section break Inspector, “Start new section with measure number one” is being ticked while this processing.. umm strange.

Workaround: (measure number changed from 5 to 1)
Just save the file or ticking this “Start new section with measure number one” off and on again