(FB2) page can "freeze" and not advanced by Prev/Next buttons

[dial-888]

Affected Version

v1.20.1, v1.20.2, v1.20.3

Describe the Bug

Some times the page can "freeze" and not advanced by Prev/Next buttons. Only after 4 - 5 button clicks the page is changing.

Steps to Reproduce

1. "Read" FB2 format book.
2. Click "Next" button.
3. Observe that page not changing and click more 4 - 5 times.
4. Now the page is changing.

Expected Behavior

1. "Read" FB2 format book.
2. Click "Next" button.
3. The page is changing.

Relevant Log Output/Screenshots

[bigbag]

@dial-888 Can you get sample of books with problem?

[dial-888]

I had troubles with this book. But bug don't appear if you leafing through a book. If you stay on each page 40+ seconds then eventually this bug can appear.
sample book.zip

[bigbag]

@dial-888 can you check on 1.22.2?