Poweramp is displaying incorrect file names in Playlist (i.e. @at.bitfire.davdroid.webdav/89/324), but displaying correctly in Folders.
Poweramp build number (available in Poweramp Settings / About)
build-974-bundle-play [974004-862d3789]
your device model
SM-A528N
your Android version
13
steps to reproduce
Add WebDAV mount with DAVx5 app
Set music folder via DAVx5 Provider Plugin (Settings > Library > Music Folders > Add folder or storage > sidebar > select WebDAV mount)
Settings > Lists > Filename As Title