I noticed some weirdness with the remote commands and Roku 3 (and/or possibly 5.0 firmware) last night. I haven't tested enough to submit a bug report, but will after I've hashed out what's my fault and what would appear to be Roku's.
However the biggest issue I've identified as a Roku bug so far:
The integrated search on the Roku 3 uses a non-standard Backspace. In most channels you send keypress/Backspace to erase a character onscreen. Apparently on the Search screen, that command does nothing. Instead, you can send an InstantReplay keypress to achieve the same effect. On most other keyboard screens, you can either send the keypress/Backspace command, or keypress/Rev to delete a character. Even the latest version of official Roku remote app for iOS (build 2.1.2 2070524) suffers from this shortcoming. You have to dismiss the iOS keyboard and use the remote Instant Replay button (or use the arrows to navigate to the bottom of the on-screen keyboard) to delete a character. It's a pretty lousy experience for a user, adding quite a few extra clicks if you make a mistake or want to change part of a search query.
Also the integrated search gives the 'error beep' sound effect for every LIT_ character you send, instead of the 'success click' sound, although on the bright side, the characters still make it to the search field. This is with both my remote app and the official Roku iOS app.
I think there may be a few other issues around ECP with the new firmware/Roku, but I'm in the middle of re-writing some parts of Remoku and can't rule out the problem being on my end just yet. Just a heads up that backspace in the integrated search is definitely broken. It does appear to work on normal keyboard screens (for instance it's fine in the Netflix channel search).
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