Can confirm in 1.18.1.
Additional note: If the mob is holding an item and is killed, the corpse will appear as if it is still holding the item, but the item is dropped before the corpse disappears.
This bug cannot be resolved because Minecraft on Crowdin's translations are not typed in the Minecraft font. In the Minecraft font, the "N" is not the same upside down, but in that site's font, it is. The site is unable to type in Minecraft's font, so this bug would be impossible to resolve if the site keeps using the same font.
Can confirm in 1.18 Pre-release 5.
Can confirm in 1.18 Pre-release 5.
Can confirm in 21w38a.
Can confirm in 21w38a.
Can confirm in 1.17.1.
Can confirm in 1.17.1.
Can confirm in 1.17.1 Release Candidate 2.
Can confirm in 1.17.1 Release Candidate 2.
Can confirm in 1.17.1 Pre-release 3.
Can confirm in 1.17.1 Pre-release 3.
Can confirm in 1.17.1 Pre-release 1.
Can confirm in 1.17.1 Pre-release 1.
Yes, but it is not marked as fixed here.
In the advancement's description of "Very Very Frightening," it reads "Strike a Villager with lightning" (Villager should be lowercase as it not a proper noun)
The "Country Lode, Take Me Home" advancement's description is now "Use a compass on a Lodestone"
/gamerule fireDamage is set to false.
Can confirm in 1.18.1. As stated by Rus Ares above, regular rain also causes this.