[Pharo-dev] Debugger "Through" acting like "Into"

In the latest Pharo 7 (Pharo-7.0.0+rc1.build.1384.sha.c34d6a69d9d01a2816df1f9fdc7388580163df29 (32 Bit)) it seems like clicking "Through" in the debugger often (but not always) has the effect of "Into", which seems wrong and makes stepping through code difficult. I don't know how new this behavior is. Is this a known behavior? If not, I'll characterize it further. Regards, -Martin