Constant problems with adding channel inserts (audio channels and fx channels) where sometimes (appears random) a selected insert will silently refuse to be instantiated as a track insert, no matter how many times it is selected. After closing, exiting and restarting Cubase I can sometimes get the insert to instantiate, however then it will refuse to add the insert to another channel. Affected inserts include UA, Izotope, Fabfilter so far. Both VST2 and VST3.
Now, after working on a single mix for most of yesterday, I open the project this morning to find all the fx send inserts removed. Most of these were UA inserts. Now they are gone and so are all my settings. So it is back to C9 now, this release is wasting too much of my time.