I confirm that I am seeing the same problems. All my X10 macros stopped working. I tried adding 0.1s delay as prescribed in other threads mentioning this problem to no avail.

A button with a single X10 code associated will work provided it is pressed for about 1 sec, but a simple quick press will not work. This used to work perfectly with Firmware 2.3.12.

I sent feedback to Philips and am waiting for an answer. I would revert my firmware in a cinch if the updater only let me.

Please send feedback to Philips to add pressure and make sure they fix this!!!