Have the keyboard version. No issues what so ever. I'm on the latest firmware 1.25. Just got it, had the desktop before, firmware 1.24 beta. No real issues there either.
None of the issues related to MIDI-sync are fixed in 1.25. Neither with the LFOs nor with the Arpeggiator.
No encoder problems any more with new Blofelds. See here for old ones:
The only other bug I know of is the behaviour of "O1 WT/SMP" / "O2 WT/SMP":
It should increment/decrement the sample-number in integer-steps (1,2,3...) for samples. But it only increments them and only to a maximum of 2 (maybe 3... not too shure since it is a while ago since I tested this).
It should increment/decrement the wavetable-number in integer-steps (1,2,3...) for wavetables. But it does some weird fractional increment inside of the current and next following wavetable.