J4PC
Assigned
Reported
MC-305781
Spear Right-Click Interaction Prevents Item Frame Placement at Close Range
Duplicate
MC-305739
Incorrect Formatting On Upgraded Books
Unconfirmed
MC-305384
Party Issue: Text formatting
Invalid
MC-305369
Leash Knot and Sound on Fences Outside Leash Range
Done
MC-304956
Entities take fall damage on moving slime blocks
Confirmed
MC-303580
The Potion Effect Segment No Longer Has a Consistent Length
Duplicate
MC-303579
While Riding, Potion Effects Don't Show Up in the Inventory Despite Being Displayed in the Top Right Corner
Duplicate
MC-303577
Inaccessible Books After Picking Block a Chiseled Bookshelf
Duplicate
MC-302540
No Example Sounds for Sound Sliders
Invalid
MC-301433
Typing indicator completely shifts formatted book page
Awaiting Response
MC-300841
Raindrops and snowflakes pass through shulkers and happy ghasts instead of landing on them
Invalid
MC-299492
Player locator bar flickers when user is spectating a spectator
Community Consensus
MC-299452
Hovering over the edges of a flip page button in a writable/written book GUI highlights it even though it's not clickable
Confirmed
MC-299451
Pages in book and quills are no longer automatically focused when switching pages
Fixed
MC-299450
You can no longer double-click to select characters in the book and quill interface
Fixed
MC-299020
Falling through Happy Ghast when dismounting while falling downward
Duplicate
MC-299019
Using a Bed while riding a rideable mob causes the player to sleep either on the ground, or on top of the mob
Confirmed
MC-298607
Recolored beacons lose their color at a distance
Duplicate
MC-298382
Inconsistent Shearing Behavior When Trying to Shear Llama with Chest
Cannot Reproduce
MC-296092
Floating Flowers in the Wildflower texture
Works As Intended
Comments
As mentioned above, this is an upgrade issue, so you need to create the book in a version before 1.21.6 because first, the issue is caused by upgrading to 1.21.6 or later, and second, after 1.21.6 Mojang removed the ability to format books.
In any chase there is now a attached world that showcases the issue. When upgrading, I noticed that also unsigned books that were created in 1.21.5 and then put in a lectern were affected when viewed in a lectern. After taking them out of the lectern and opening them, the formatting returned to normal, but only if they weren't signed before.
This behavior is different when compared to 1.21.10 and is highly unfit, and clearly not intended. Imagine trying to jump with a horse in the middle of a river then when reaching the end of the river the horse all of a sudden jumps without any user input and also without a jump animation. This is clearly on multiple levels not working as intended.
Can confirm in 1.21.11
Can confirm in 1.21.10
https://www.youtube.com/live/AEHc8jrcc6g?feature=shared&t=749
This is also especially sad because normally Mojang cares about long-term worlds so that nothing breaks, for example with terrain blending. But here something you create and looks great in a version now looks completely different and broken the next version.