Guide preview not streaming with DIRECTV app on my Hisense Roku TV

I’m having a problem with the DIRECTV app on my Hisense Roku TV.

TV: Hisense OLED-Series-40
Roku software: 15.3
DIRECTV app: Version 4.26, Build 306103

The live TV channels play normally in full screen.

The problem is specifically the small live-video preview in the Guide. When I highlight a channel, the preview initially starts: I can hear the audio and see the progress bar moving for a few seconds. When the progress bar finishes, the preview stops playing.

If I press OK while the preview is playing, the channel switches to full screen and continues playing normally.

I have already:

• Factory reset the TV
• Reinstalled the DIRECTV app
• Restarted the TV
• Restarted the app
• Confirmed that full-screen live TV works normally

The problem only affects the Guide’s mini live preview.

Can you please check whether this is a known issue with DIRECTV app version 4.26 build 306103 on Roku TV, and escalate it to the DIRECTV app engineering team if necessary?