Invisible limiter in my song??

[Stood]

Hello, I am fairly new to producing music, and as I was using Tracktion Waveform Free (latest version) with seemingly no issues, suddenly after I added a track (it was a track for automating a low pass filter) it appeared that a brickwall limiter was applied on my whole mix. This only happened after I added the track, and I did not add any compression or limiting to the master plugins. Is this a result of cpu usage or can I revert this, any help is appreciated.
Thanks.
Edit: streamable link to show issue. Note that no limiters or compressors are on the master plugins rack and the issue spontaneously happened.
Edit 2: Problem is resolved, issue was in the stock low/high pass filter. Removing it solved the issue, I'll probably use a different one now.
Edit 3: changing the order of the plugins also seems to work. In that case, stock is fine.

[pough]

Could it be that the master volume is set to -31.26 dB?

[Stood]

No, changing the volume just increases and decreases the gain, and the mix is still limited. Thanks for the help, though.

[pough]

https://www.meldaproduction.com/MEquali ... omatically.

"MEqualizer provides a safety brickwall limiter, which ensures the output stays below 0dB and prevents your equipment and your ears from potential danger automatically."

[Stood]

thank you very much, that is probably the cause of the issue and I will look for a solution. Thank you so much for your help.

[Stood]

Alright, I'm probably missing something as the brickwall limiter on the equalizer is a setting that I have to toggle on (or at least, that's what it implies, I tested it out and it's independent to my issue) so I'm guessing it's either a different plugin or it's a software thing. I'll try to look through the settings of each program.

[Stood]

Okay, I have found the issue and it was in the low pass filter. disabling it stopped the brickwall limiter. I don't know why this is a thing, but thank you @pough for giving me the clues to find out it was one of my plugins. I'll probably just use a different pass filter that isn't the stock one. Thank you for your help.