@itandy
for me it is impossible to change the height of the nav bar, I do have Gravity Box installed but navigation bar tweak is set to off...if I remove GB from xposed, the height is set correctly with this app as soon as GB is back on, the height doesn't change and I have to use an other module (Dimensions Editor) to be able to fix the height to the desired value...
going from portrait to landscape is a bit glitchy as well
Here is the
View attachment 3305029 (this log is with GB navigation tweak set to off and your module, Dimensions Editor is not installed)