iScreensaver version 6.8.4 has a number of bug-fixes and improvements, including several bugs that could cause playback failure on multi-monitor macOS Apple Silicon / M1 systems or the macOS Ventura 13.0 beta. Authors who are building screensavers that may be encountering any of these issues should update, re-build, and re-distribute their screensavers.
Keyboard navigation with HUD enabled?
Does keyboard navigation work when the HUD is enabled? I know the HUD is enabled, because when I move the mouse it appears and I can control my slideshow with it. My understanding was if the HUD is enabled and I check the appropriate choices in the iScreensaver options for Enter/Return, space bar, and arrow keys that those keys will trigger the HUD and allow navigation as well, but they don't seem to be working on my Mac running Catalina.