Hi BitPerfectRichard,
we finally managed to reproduce the problem with Console Log and the fix will be included in the upcoming software update.
The issue was related to the “Resize remote screen” feature and disabling it would have worked as a workaround. The reason why you don’t reproduce it with the just released Yosemite is that remote resize is not yet fully supported there and we are working on it. This should also explain why you don’t get the expected resolution.