Can't select items in Group helper UI

Configuration Frontend
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1

In the Group helper modal, if hover over any of the items at the bottom, they flash a bunch in the hovered and unhovered state. If I try to click one, it doesn’t work unless I click a bunch catch it at the right time. Sometimes, I click too fast, and it close the modal too :confused:.

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Anyone else seen this before? Any idea what the cause could be?

2

I did a bit more research and found it’s updating the DOM like crazy:

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I looked at the WebSocket connection, and there are tons of events in long lists like this being sent:

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Look at the time codes. All those in milliseconds of each other. Any idea what might’ve caused this? It started after the 2026.4.1 update, but I’ve also added a bunch of devices:

  1. Inovelli mmWave Switches.
  2. Inovelli On-Off Switch (just one).
  3. Apollo R-PRO-1.
  4. Zone Mapper integration for Apollo.
3

There’s not enough information to give any specific tips.

  • Make sure your mmWave sensors are configured for the right areas. I had curtains that moved whenever someone walked by the room and triggered presence to change. They’ll see through walls too, so keep that in mind when you’re configuring the areas you want it to watch.
  • Look at the reporting values for those devices (whether that’s in Z-Wave, Zigbee, Matter, or something else). You might have something set with a minimum 0 or a low maximum that forces updates even if nothing changed.
  • My Blue Series devices send an update through Z2M for all values on the device if anything changes. It’s a lot of data if you have many devices or a slow USB drive or SD card. Data for entities that are disabled in Home Assistant will be discarded and reduce the amount of data being written to the disk (which will free up resources and speed up the UI). I disabled most of the configuration settings, including the LED color, effect, and brightness settings.
4

I put a 512GB NVMe drive in Home Assistant on the Pi5, so it’s probably not the storage medium.

This isn’t just that one group; it’s all groups. Hover over those bottom values, and they all flash wildly.

When I say they flash, I don’t mean the occupancy is going on and off, I mean the item itself in HTML is flashing state changes constantly; all of them, as if Home Assistant is going wild trying to update the UI.