'Current Program' block - not displaying 30' shows

Hello everybody,

I'm facing a problem with the 'Current Program' block.

The schedule was set with 30min increments from the beginning.
All shows start at the start of an hour (01.00, 02.00,...)

I've only got 2 shows that last 30 minutes, let's say A at 12.00 - 12.30 and B at 12.30 - 13.00.

The problem is that the B is never displayed on the block.
Instead, A is displayed for the whole hour.

I've made a few tests by swapping these two programs or moving them to different hours, etc and i've come to the conclusion that shows that start at xx.30 are not displayed at the block.

Is anyone else facing the same problem?

Any ideas on what i should check?

Thanks in advance.

Pavlos