These are the most notable changes and bug fixes:

Fixed: Unsupported LanguageLevel in LanguageLevelTypeAware (WI-68761)
Fixed: SIGSEGV on macOS (JBR-4856)
Fixed: Blank IDE when reconnecting second monitor (JBR-4897)
The full list of changes in PhpStorm 2022.2.4 is available in the release notes.