[Bug]Intermittent frame drops during swipe page-turn (Push animation)

Bug Description

Swipe page-turn animation is smooth most of the time, but frame drops / stuttering occur intermittently — most noticeably right after opening a book, and again after flipping several pages.

Steps to Reproduce

1. Open a book (Animation Style: Push, Paging Animation enabled)
2. Swipe to turn pages
3. Notice stuttering is more likely to occur:
   • (a) right after opening the book
   • (b) after several consecutive page turns

Expected Behavior

Swipe page-turn animation should stay smooth consistently, without periodic frame drops.

Environment

• Platform: Android
• Readest Version: 0.12.8-2026091306
• WebView: 151.0.7922.200
• Animation Style: Push

[简][水鏡月聖].我们的『阅读理解』出错了.01.zip