PHPStan errors still shown after PHPStan config change

[InvisibleSmiley]

I guess the below is a caching issue?

Initial situation:

• everything set up for PHPStan (Quality Tools, Inspections)
• some ignoreErrors entries in PHPStan config file
• no reported errors running vendor/bin/phpstan analyse
• no errors shown in PhpStorm editor

Steps to reproduce:

1. Remove an entry from ignoreErrors affecting a test file
2. Open the test file
3. Undo the ignoreErrors change
4. Revisit/reopen test file
5. Compare PHPStan errors reported in PhpStorm editor vs vendor/bin/phpstan analyse (latter reports none)

Expected: Errors disappear from PhpStorm editor (at least after reopening the file)

Actual: PhpStorm editor still shows PHPStan errors