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Hammer Bug: Particle Browser Filter frequently loses focus when typing #1806

@KrisCatboy

Description

@KrisCatboy

Describe the bug

an extremely irritating bug from valve's hammer that appears to still be an issue here.

it seems to happen whenever the currently selected effect is changed, which happens when the current selection is hidden by the new filter

2026-05-19.12-42-14.mp4

To Reproduce

  1. Launch Hammer
  2. Create a new map (File > New)
  3. Open the Particle Browser (Tools > Particle Browser)
  4. Try to type in the Filter
  5. Observe as it frequently loses focus with each keystroke

Issue Map

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Expected Behavior

the Particle Browser's Filter shouldn't lose focus while typing into it

Operating System

Arch Linux

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    Type: BugThis is a problem with something that should be working one way, but isn't.

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