Wrong position after rotation

[RomanSoviak]

RPReplay_Final1697358920.1.MP4

RPReplay_Final1697646785.MP4

[RomanSoviak]

hi @mickael-menu, as you recommended in Slack I provide more details/steps for reproducing this bug:

1. I downloaded the app from here: https://testflight.apple.com/join/lYEMEfBr
2. Opened OPDS catalogue and fetched the first book
   
3. Then I went to the library and opened book.
   After some rotations position was shifted to the start of the chapter: https://github.com/readium/swift-toolkit/assets/26696190/4ce9d407-ece5-4250-8994-27d6616bd7ed
4. This bug was reported by our user on the tablet.
   https://github.com/readium/swift-toolkit/assets/26696190/fb681c19-5779-4628-b039-38f320b912c3
   This book has one big chapter and it's uncomfortable when position changed from 57/281 to the 1/281. Could you please help with that. Should we store locator somewhere and after this rotations use it? Or what should we do in cases like that?
   Thanks in advance🙂

[mickael-menu]

There are two different issues:

1. When you rotate several times the screen, the position is progressively moving backwards. This is expected and a current limitation of the toolkit, because we restore the web view progression instead of an exact location in the HTML resource. This should not be an issue for your users though.
2. If you rotate the screen two times too fast (before the chapter has the opportunity of rendering), then we loose the current location and end up at the beginning of the current chapter. This is a bug that needs to be fixed in Readium, there's nothing to do in your app.

[mickael-menu]

@RomanSoviak Could you check that this PR solves the problem for you? #347

[RomanSoviak]

It works!
Thanks a lot!
Do you plan to release a new version with that update?
@mickael-menu

[mickael-menu]

Yes I'll do a patch release after this other PR is solved: #349