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Moving the mouse over messages causes high CPU usage

(#3025) Bug Confirmed desktop performance
by Commandhat edited by moderator

Observed behaviour

The canary client shows no discrepancies, except that this sporadically also happens when Fluxer is minimized.

Reproduction steps

  1. Open Fluxer Canary and another task-tracking application side-by-side, e.g. Task Manager, htop, etc...
  2. Shake mouse rapidly across several different messages
  3. Observe high CPU usage from task manager app

Build information

Canary Desktop 2026.602.31138, Web 2026.605.11941, Linux 7.0.12-arch1-1 (x64), Electron 41.2.2, Chrome 146.0.7680.188, Node 24.14.1, Locale en-US

Platform

Linux

Evidence

Stable: https://lithi.io/file/3BqvJSQU.png Canary: https://lithi.io/file/txqtCQVS.png

Details

Expected behaviour No unusual CPU-consuming behavior.
  1. Rex changed the status from Needs triage to Confirmed

3 comments

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Comment by mesub
mesubMod 1 vote
Can reproduce CR: Canary Desktop 2026.606.140333, Web 2026.605.11941, Windows 11 10.0.26200 (x64), Electron 41.2.2, Chrome 146.0.7680.188, Node 24.14.1, Locale en-GB
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Comment by Comfy_Deer
Comfy_DeerReviewer 1 vote
Can reproduce CR - related to Neko tracking? unless issue was present before pre-Canary; no spike when minimized - Canary Desktop 2026.614.190551, Web 2026.615.1128, Linux 6.17.0-35-generic (x64), Electron 41.2.2, Chrome 146.0.7680.188, Node 24.14.1, Locale en-US
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Comment by ternera
terneraMod 1 vote
Can reproduce CR - Canary Desktop 2026.615.234030, Web 2026.616.1249, Linux 7.0.12-1-cachyos (x64), Electron 41.2.2, Chrome 146.0.7680.188, Node 24.14.1, Locale en-US
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