@SNAPEY - Thanks, Snapey!
I use phpStorm on a local windows machine with automatic ftp upload on change the apache2-server. (both machines in my local network ;-))
But you set me on the right track: When I edit a blade-file with notepad and upload it with ftp, the view cache is updated.
When I edit a blade-file with phpStorm and phpStorm uploads the file, the view cache is not updated (but the change is copied to the server).
And finally I found the error in phpStorm settings: Deployment/Options/"Preserve files timestamps" was set.
Unset this and caching works like a charm ...
I have problems with caching.
Making changes to blade files is not reflected on the server; only this works for me :
php artisan view:clear
I tried different solutions (switched off opcache, changed values, updated composer, etc.) nothing helped.
Most of the tipps are rather old, but this one: