Flow-Launcher/Flow.Launcher

BUG: Flow Launcher triggers excessive events

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#3817 opened on Jul 12, 2025

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Description

Checks

  • I have checked that this issue has not already been reported.

  • I am using the latest version of Flow Launcher.

  • I am using the prerelease version of Flow Launcher.

Problem Description

Flow Launcher, it appears to be triggering hundreds of events in rapid succession. This can overwhelm other applications that listen for these events, causing them to crash or become unresponsive.

Example of what Flow Launcher sends and I wonder what the reason for this is

https://github.com/user-attachments/assets/1b4cdd17-eee7-439d-ba5d-26bead3f7138

Also this is not just from settings page, but also from search https://github.com/amnweb/yasb/issues/375

To Reproduce

No response

Screenshots

No response

Flow Launcher Version

1.20.1

Windows Build Number

26100.4652

Error Log

No response

Contributor guide

Tech stack
csharp
Domain
desktop
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
C#Windows event programming
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50
Research direction
Investigate the event system in Flow Launcher, focusing on the settings page and search functionality. Look for loops or repeated event dispatches. Review the attached video and linked issue #375 for context. Check if there's a debouncing mechanism missing.