Why is my watchOS 11.5 distance calculation off after update?

Ever since I upgraded to watchOS 11.5 on my series 10 I’m seeing inaccurate distances when I select an ‘indoor walking’ workout. In previous versions the watch would map on to treadmill distances pretty well, usually with in a +\-0.01 mile variance (which is totally acceptable). However after upgrading to watchOS 11.5 I constantly have a -0.1 mile variance in my distance. I have tested this with 5 different treadmills all different brands and models just in case there was some sort of issue with the specific treadmill I usually use at the gym. The watch is constantly has a -0.1 variance regardless of the treadmill I use.

[Re-Titled by Moderator]