Problems with non-unicode Symbols, Math, and Verbs in title and abstract w.r.t to ACL Anthology

[Abhishek-P]

Hi Folks,
I noticed a few issues in ACL anthology arising from use of \math verbs and related symbols in title and abstract

acl-org/acl-anthology#5649
acl-org/acl-anthology#5648
acl-org/acl-anthology#5647

Some of them are solvable with using unicode characteers, while others are stylization problems

Would it make sense to either provide guideline or restriction in template regarding the same?