Missing-tooth index added to the encoder component

Here is a demo:

Hello,

is anyone tested this new feature on real machine? I installed it on Emco Compact 5 lathe, with LinuxCNC 2.9 verzion.
(the encoder.c component in which is integrated the "missing-teeth" funtion, i found on github. Copy pasted to src/hal/components, and compiled it).
But, when the lathe is threading, the result is not ok (see the picture).
I used the original 100ppr encoder disk, and cut out 3 holes.
The encoder component has the following paramteers:

setp spindleEncoder.counter-mode 1
setp spindleEncoder.min-speed-estimate 0
setp spindleEncoder.position-scale 100
setp spindleEncoder.x4-mode 0
setp spindleEncoder.missing-teeth 2

I try to change the .missing-teeth parameter to 3, and the result is the same.
Does anyone have experience with this?
On the finished thread seems, the synchronisation works, but maybe the position where the tool entered in material is every time offsetted a little.  

 
 

 

If you watch index-enable do you see the expected behaviour?

The position should reset to zero at the index, so I wouldn't expect any error accumulation.

Sorry, my mistake! The encoder optocoupler sensor i first use for encoder.N.phase-Z, later i modify to be encoder.N.phase-A signal, but forgot to delete connection to phase-Z. This causes the 'problem'.
The missing-tooth works properly, tested.
Sorry to flood the forum. The machine i transported 400km away, and was no chanse to test it.