Cracks on enchanting table book appear at double the intensity when pages are flipping

Discovered while testing MC-269348. Relates to MC-166101, MC-262933, MC-265667 and MC-268537.

The bug

When the book on enchanting tables is doing a page flip animation, the block crack texture will appear twice as dark as it normally does.

How to reproduce

1. Punch an enchanting table

2. Observe

Expected results

Constant intensity for the cracks on the book.

Actual results

It changes when the pages move.