Closes https://github.com/ppy/osu/issues/29492.
I'm not immediately sure why this happened, but some old locally
modified beatmaps in my local realm database have a `BeatDivisor` of 0
stored, which is then passed to
`BindableBeatDivisor.SetArbitraryDivisor()`, which then blows up.
To stop this from happening, just refuse to use values outside of a sane
range.
This is in addition to Shift + Right-click.
I thik middle mouse feels more natural and is a good permanent solution
to this issue.
Note that this also *allows triggering the context menu from placement
mode*. Until now it's done nothing. This may be annoying to users with
muscle memory but I want to make the change and harvest feedback. I
think showing the context menu is more correct behaviour (although
arguably it should return to placement mode on dismiss?).
Closes https://github.com/ppy/osu/issues/28916.
The previous behaviour *may* have been intended, but it was honestly
quite baffling. This seems like a saner variant.
Closes https://github.com/ppy/osu/issues/28983.
While the direct cause of this is most likely mouse confine in
full-screen, it shouldn't/can't really be disabled just for this,
and I also get this on linux in *windowed* mode.
In checking other apps, adding some tolerance to this sort of
drag-scroll behaviour seems like a sane UX improvement anyways.
Closes https://github.com/ppy/osu/issues/28938.
This is related to reloading the composer on timing point changes in
scrolling rulesets. The lack of unsubscription from this would cause
blueprints to be created for disposed composers via the
`hitObjectAdded()` flow.
The following line looks as if a sync load should be forced on a newly
created placement blueprint:
da4d37c4ad/osu.Game/Screens/Edit/Compose/Components/ComposeBlueprintContainer.cs (L364)
however, it is not the case if the parent
(`placementBlueprintContainer`) is disposed, which it would be in this
case. Therefore, the blueprint stays `NotLoaded` rather than `Ready`,
therefore it never receives its DI dependencies, therefore it dies on
an `EditorBeatmap` nullref.
