Can't change to legacy interface.

That's it. I'm testing 5.4 put the <entry key='web.path'>./legacy</entry> restarted traccar and still stuck on modern interface.

Tried on both xml config. files and it's just the same.

-> Linux ARM

Have you cleared your browser cache and data?

Yes I did, ussually also use another browser and/or machine to be sure since Firefox sometimes goes bonkers, but the issue persisted.
Then, I had to reboot the server (test server) and the change happened.

(There's some odd behavior on several functions all around since 4.12~4.13..)

Still waiting for ANY solution.