Regular master tnum width 1328, other 5 masters are 1320

[kenmcd]

Version 4.1 VF fonts from this repo - GF fonts are the same.

Describe the bug
In the Regular master the .tf figures and other glyphs have a width of 1328.
All five other Roman masters have a width of 1320.

Same situation with the Italic variable font.
The Italic master is 1328, and the other five Italic masters are 1320.

To Reproduce
These are the glyphs involved:

/zero.tf/one.tf/two.tf/three.tf/four.tf/five.tf/six.tf/seven.tf/eight.tf/nine.tf/zero.tf.slash/one.tf.ss01/three.1.tf/four.tf.ss01/six.tf.ss01/nine.tf.ss01/hyphen.tf/hyphen.case.tf/less.tf/greater.tf/lessequal.tf/greaterequal.tf/equal.tf/notequal.tf/plus.tf/minus.tf/multiply.tf/divide.tf/plusminus.tf/approxequal.tf/asciitilde.tf/asterisk.tf/less.case.tf/greater.case.tf/lessequal.case.tf/greaterequal.case.tf/equal.case.tf/notequal.case.tf/plus.case.tf/minus.case.tf/multiply.case.tf/divide.case.tf/plusminus.case.tf/approxequal.case.tf/asciitilde.case.tf/asterisk.case.tf

Expected behavior
All masters should be the same.