Samsung is days away from pushing the stable One UI 8.5 build, but the latest Beta is still flagging optimization and touch delay issues on the Galaxy S25 series.

While testing Beta 10 on the Galaxy S25 Ultra, I ran into a system-level warning that should not be showing up this late in the cycle. A pop-up appeared stating that “One UI Home isn’t optimized for the latest version of Android.”

What followed was more concerning.

Touch input started lagging, not outright freezing, but delayed enough to break interaction flow, with some taps not registering at all.

The issue became more obvious when using the search. Triggering it caused a full launcher crash; the UI didn’t reboot cleanly either.

Instead, the system entered a half-responsive state. The Quick Panel could still be pulled down, which suggests the system UI thread was alive, but actions inside it were dead. Tapping “Start Recording” or similar toggles did nothing.

There is a workaround, and it’s oddly manual, via MojoTrick. Repeatedly swiping back to the home screen eventually restores responsiveness. That lines up with a temporary blockage in the launcher or UI rendering pipeline.

This bug sits in an uncomfortable spot. The fact that it’s tied to One UI Home optimization suggests something isn’t fully aligned between One UI 8.5 and the underlying Android build.

With the stable rollout expected this Thursday, the question is simple: Does Samsung already have a patched build ready, or is this slipping into release firmware unnoticed?

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