Prerequisites

• I have searched for duplicate or closed issues
• I can recreate the issue with all plugins disabled

Describe the issue

Hi, after update from 1.6.13 to 1.6.14 when you search for mail using quick search above mail list and you use any characters from polish language, e.g. word "wzrosną", then error pops up in bottom right corner and search fails:
Błąd serwera: UID SEARCH: Error in IMAP command UID SEARCH: Missing LF after literal size (0.001 + 0.000 secs).
Search in 1.6.13 works correctly.

What browser(s) are you seeing the problem on?

Chrome, Firefox

What version of PHP are you using?

8.4

What version of Roundcube are you using?

1.6.14

JavaScript errors

No response

PHP errors

No response