In Write Mode, . I can shift the ending of a pedal line bracket from one note to the next


and also to the next bar line:

but I can’t shift it to the first note of the next measure like this:

without adjusting it in Engrave Mode.
What am I doing wrong?
I don’t think you’re doing anything wrong. You would need a similar option in the properties that the hairpins (cresc-dim) have, to cross the barline. That could be a feature request.
Curiouser and curiouser…When I selected the option that you mentioned for hairpins, the hairpin won’t stop at the bar line; it only goes on to the first note of the next measure. I wouldn’t want that for pedaling either.
Sometimes pedal brackets and hairpins stop at the bar lines, and sometimes they to go on to the first note of the next measure. I don’t understand why one can’t do both in Write Mode.