Reproducer:

foo = DBM:NewMod("Foo")
t = foo:NewCDTimer(123, "test")
t:Start("v20-30")
t:Start(50)

That should yield a normal 50 second timer but instead creates a 40-50 variable timer. If you add an explicit :Stop() between the calls it works as expected. If you restart it twice it also works.

Should be fixed by b02995e

Indeed, I left the newBar reuse untouched, and it caused the issue you're describing.
Adam's commit indeed fixed the issue by adding this:

newBar.minTimer = varianceMinTimer or nil

7d94c55
Can be closed