Subroutine that change the tool diameter.

i made this g code, and i have some disagreement with how the interpreter execute it...

at the end of this gcode the diameter of my tool in my opinion should be smaller of 11 units, actually it only removed one units, because the parameter #5400 did not change when i changed the tool diameter with the G10 L1 , this happens also with G10 L10.
This is a minor issue i can write #800 to be 11 the second time, but still if there was an O-code to update the read only parameters it would be nice.
Another disagreement is if i add G42 movement between one diameter change and the other like here.

here comes the funny part, the graphical preview shows me two different trajectory when i load this, but when i play it, it goes twice on the same trajectory as if the diameter didn't change, this happens with both G10 L1 and G10 L10.
if i add a tool change in the middle just after calling the subroutine, the preview will show a single line, but when i play it i got two lines, and also the diameter will be changed 11 units instead of only one.
So placing a tool change in middle of this g code fixes it, but it's really time wasting since normally i have my spindle running at high speed and i have to stop it and run it again for the tool change to happen.
Any thoughts on why this happen exactly and is there a better solution to refresh tools, other than tool changing?

sorry, i updated from 2.5.0 to 2.5.2 and it's working now, you can close this

I did have some changes in my 2.5.0, but i re downloaded the source and it presents the same problem, so this was indeed fixed from 2.5.0 to 2.5.2