Zettlr tabbing issue

zettler uses the as indention ,
but the resulting formatting can be weird at times:

? not always ? after clossing and reopening rendering is correct

[plain text]
aaa
bbb
ccc
ddd
eee
fff
ggg
hhh

pressing 1 tab on selection aaa > fff :
aaa
bbb
ccc
ddd
eee
fff
ggg
hhh

pressing a second tab on the tabbed selection :

    aaa
    bbb
    ccc
    ddd
    eee
    fff
ggg

hhh

plain text, with empty line
aaa
bbb
ccc

eee
fff
ggg
hhh

pressing 1 tab on selection aaa > fff :
aaa
bbb
ccc

eee
fff

ggg
hhh