BURST when LFE is filtered

[phase.mastering]

Hello,

I got really scared for my speakers when I checked the Low Pass Filtering for LFE option.
HUGE Burst signal (totally messy sound)
See screenshots.

This is not supposed to happen in a professional studio, given the price of monitoring system.

Am I doing something wrong or is there a dangerous bug ?

Thank you

[PG1]

This seems to be a bug. Don’t use this (old) feature, and better use a plugin if you need this functionality.