I'm unable to reproduce this on a virtual machine which was upgraded to 23.01 from 22.05 (and to 22.05 from 22.01 previously). Steps I'm taking are:
1. Create a new limiter using the FQ_PIE scheduler.
2. Create a floating rule (in my case, for the LAN interface) which passes any traffic and uses th new limiter on the In pipe.
3. Disable the default allow any rule on LAN.
4. Install the iperf package in pfSense and start it as the server with the default settings.
5. Use another VM as the iperf client pointed at the pfSense LAN's IP address for the iperf server (iperf3 -c 192.168.1.1 -p 5201
).
Using FQ_PIE, FQ_CODEL, and the worst-case weighted fair, iperf traffic was limited to the 100 Mb/s cap I set in the limiter. Disabling the limiter in the floating rule of course restores full bandwidth.
Are you on your own hardware? If not, I suggest contacting TAC for a 23.01 firmware image to reflash directly to that version. If you're on your own machine, it's now possible to upgrade directly to Plus 23.01 from pfSense CE 2.6, so 22.05 isn't in the picture.
In both cases, I suggest getting the system to 23.01 before importing your configuration file. If the reflash/upgrade is successful, test the limiter using the steps above (doesn't have to be a virutal machine). If that's successful,then import your configuration and test again. Marking as Not a Bug for now.