web interface using wrong address / port number when doing ssh port forwarding

[T_X]

I'm running the tahoe-lafs node with

web.port = tcp:3456:interface=127.0.0.1

on a dedicated machine. I'm then using something like

ssh -N -f -L 10000:127.0.0.1:3456 hostname

to set up ssh port forwarding on my laptop to be able to access the web interface. I can then successfully see the web interface at ​http://127.0.0.1:10000/ from my laptop.

However, the buttons redirect me to invalid addresses, e.g. "​http://127.0.0.1:3456/uri/..." instead of keeping port 10000. Tried both the "Create a directory" and the "View!" button.