Changing current page after zooming in multipage PDF documents

[Sikachyna]

Bug Report or Feature Request (mark with an x)

- [ ] Regression (a behavior that used to work and stopped working in a new release)
- [x] Bug report -> please search issues before submitting
- [ ] Feature request
- [ ] Documentation issue or request

In multipage documents (use [show-all]="true") set current page in the middle and do zooming (in or out). Expected behaviour is zooming of current page but current page number will also to change. This issue you can see also on Demo page. I know about [stick-to-page] option but when you will use it on PDF documents with many pages you will see bad visual artefacts during zooming, looks like switching between two pages. Thank you!

[stale[bot]]

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