Album feature bug: A tremolo between notes changes noteheads in a joined score

Hello.
I've just found a bug in the album feature while fiddling with it.
If an album contains a file which has a "tremolo between notes," it causes change of noteheads.
I tried to search in this website whether this problem is already reported or not, but I couldn't find such one... perhaps because of my lack of English skill. Anyway, I explain it below.

I'm attaching sample files.
test1.mscz doesn't have any tremolo between notes, and test2.mscz does.
tremolo_album_test1.mscz is the joined file of the two.
And, tremolo_album_test2.mscz is also a joined one but in reverse order (test2.mscz -> test1.mscz).

test2.mscz has tremolos between whole notes and half notes.
In tremolo_album_test1.mscz, you would see strange change of the latter noteheads of each tremolo. Whole and half notes appear to be double whole and whole notes, respectively.
In tremolo_album_test2.mscz, all notes involved in a tremolo appear to be quadrupled their length.

note: the latter problem (tremolo_album_test2.mscz) doesn't happen in the first generation of the joined score. Once generated tremolo_album_test1.mscz, then the latter problem begins occurring until you close the Musescore program.

Can you reproduce this? I'm prepared to file it in the issue tracker if someone verifies it.
By the way, I'm remembering to have read that the next major release will do away with the album feature, though...