This is not necessarily a good test to determine if lack of filter caps is causing the issue. Often feedback can occur through the power supply due to poor filtering. The voltage may look fine when you test it, and then later there could be an oscillation when you place the current meter to read Ie2. If you have an O-scope, use that to monitor your collector voltages while you are taking your current readings. And use a 10 uF or 100 uF cap on the power supply at the board, plus another 0.1 or 1 uF capacitor for extra caution.I checked it out on an O-scope (tektronix) that my uncle lent me and it's a constant 6.00 Volts coming out.
The main measurement issue is the value if Ie2. It's quite possible that when you put a current meter in that location, the circuit oscillates and changes the reading. Any time I've had strange readings like yours, it was the result of doing quick measurements with a multimeter, rather than a scope. A circuit can oscillate just due to having meter probes attached. DC readings will not be correct if the circuit oscillates.
This is my best guess as to what is happening. If it turns out to not be correct, I think I may be stumped.