When I modify the "Arm Down-Up" muscle range, the "Arm Front-Back" get locked with a range of 0. (see attached gif)
This also happens on other limbs like the Upper Leg.

repro:
- open project
- select Winston and open the Inspector
- In Rig, enter Configuration...
- Go to the Muscles & Settings tab
- Expand range options for "Arm Down-Up" & "Arm Front-Back"
(notice that the range values for the "Left Arm > Arm Front-Back" are -100 to 100)
- Modify the minimum value for the "Left Arm > Arm Down-Up" range
- click Apply...
bug: "Left Arm > Arm Front-Back" values are now 0 to 0
expected: "Left Arm > Arm Front-Back" values should not be affected and should still be -100 to 100

this is not a regression. repro since at least 5.6