Search highlighting broken at complex searches

[idadoudou]

When I search title=TALEN and abstract=plant, the and will be highlighted, but the TALEN and plant do not.

[koppor]

Refs https://github.com/koppor/jabref/issues/341

[koppor]

I even don't see any highlight in today's build:

[idadoudou]

Please use ***@***.*** due that it is difficult to login qq email.

[koppor]

@idadoudou Please login into GitHub and configure GitHub to use another email. I think, the help page at https://docs.github.com/en/account-and-profile/setting-up-and-managing-your-personal-account-on-github/managing-email-preferences/adding-an-email-address-to-your-github-account is the relevant one.