I've been using an Ikea Tradfri setup in my apartment for about a year. I've got lights, remotes, shortcuts buttons, outlets, blinds, a gateway and an extender. It's been working mostly smoothly.
A week ago something weird started happening. When I press on any of the buttons on the remotes or the shortcut buttons to turn some appliances on or off, at first they don't respond. I press again, and then they respond. (e.g. the light turns on.)
At first I shrugged it off, but then it started happening regularly on all my remotes and shortcut buttons. Clicking just once does nothing. After the first click, the second click does the trick. (These aren't two clicks rapidly in succession, there could be a few seconds between them.) Also, after the second click works, the button will work again with just one click. It feels as though the button was sleeping and I woke it up.
I haven't changed anything about my setup at all. I might think that the batteries on the remotes are dying out, but it would be quite the coincidence if they all ran out at the same time.
Why this is happening and how can I fix it?
(Note: I replaced all the batteries but the problem still happens.)