When I set the shutter release mode to "single" - it stays in single. When I set the release mode to "continuous" - it stay in continuous. However, when I set the release mode to "2 second delay", it will indeed delay the first shot by 2 seconds, but then it reverts to the previous mode ("single" if that was the previous mode, or "continuous" if that as the previous mode).
When taking multiple exposures from (e.g.) a tripod, this is rather bothersome (to say the least - a number of times I've had to delete a shot, set up for "delayed release" and re-shoot).
Is this a "bug" in the system, or is there some other deep-in-the-bowels setting to have the shutter release mode stay at the 2-second delay?