The bug
All blocks that use animated textures, such as portals, magma blocks, sea lanterns, or fire, have their animation play too fast.
Linked issues
is duplicated by 18
13 more links
MC-162058
Animations on the campfire, nether portal and fire goes way too fast.
Resolved
MC-162089
19w39a animations are way too fast
Resolved
MC-162092
All animations for blocks are sped up
Resolved
MC-162100
to fast textures
Resolved
MC-162248
The animations move faster and are visible in the Pause menu.
Resolved
MC-162271
animations are fast, liquid flows fast.
Resolved
MC-162342
Water, Lava and Fire Animations are too fast
Resolved
MC-162347
Broken animation
Resolved
MC-162389
Problems with animation speed (textures)
Resolved
MC-162418
New Rendering Engine is breaking the Animations in both Programmer's Art and the Regular Textures.
Resolved
MC-162430
Campfire and water flowing animation too fast!
Resolved
MC-162439
Animations playing too fast
Resolved
MC-162461
Texture animations play much faster than before
Resolved
Attachments
Comments 3

That is intentional, see MC-118001.
Affects everything with an animated texture.