I've been using PSK31 now for the past few weeks, with great success, but have seen the occasional bug in SSDR. I just saw one that is clear-cut, so I will report it.
I have created a number of global and transmit profiles to support PSK31 on different bands. Just now I turned the radio on from cold, but rather than invoke my 10M PSK31 profile, I decided I would just set the knobs and go.
So I switched to the 10 m band using the "band" pullout menu. The radio settled on 28.120 plus some odd small amount, perhaps the last frequency I transmitted on in the PSK31 "band". The slice receiver was set to DIGU, which is where I left it. The DAX channel assignment for the receiver was "none", which is not where I left it. I set it to "channel 1". That might be a bug.
Then I set VOX mode and DAX tx/rx mode in the panels on the left side. I checked the EQ panel, which I expected to be dimmed. It wasn't. I know from experience that I'm going to have trouble getting the radio to run PSK31 if the EQ panel is not dimmed. I cycled the VOX and DAX buttons, no change.
I went back to the slice box and selected DIGU. Doing so dimmed the EQ panel, as it should be.
Summary: The radio came up in DIGU mode, but did not perform all of the steps associated with entry to that mode.