What are all the major battle issues not fixed between Reb/Blue and Yellow for battling with others?

Question

Like I mean, they could’ve fixed freeze instead of giving Lorelei special and unique AI, I’m sure they didn’t fix freeze dethawing so red and blue players could play with yellow. I know there’s more examples but I cannot remember them for the life of me. Are there any other major battle flaws or bugs that weren’t fixed in yellow for battles with red and blue?

Answer 1

Nearly all battle glitches from Red and Blue version were retained in Yellow version to prevent desyncs or other issues when people with different versions play against each other. So the list of battle glitches not fixed between Red/Blue and Yellow is the same as the list of battle glitches in RBY.
Below is a link to a bulbapedia article containing a list of all glitches in Red, Blue and Yellow versions, with descriptions and video examples.
https://bulbapedia.bulbagarden.net/wiki/List_of_battle_glitches_in_Generation_I#Gameplay-affecting_glitches