Hey Alexandre, thanks for collaborating on this error. I had two situations when using the ILS on the ATR. I noticed that if you intercept the ILS glideslope with the aircraft still descending (descending with VNAV, in my test) it supposedly enters LOC/GS mode and starts to descend. As it descends it starts to lose the GS, and if you look at the co-pilot’s PFD (which is not in ILS mode), the GS diamond on the commander’s PFD will be equal to the VNAV diamond. Now if you let the aircraft stabilize at some altitude below the GS, it captures and descends smoothly. Well both times I tested it worked. I will reproduce your test.