How to fix drag & drop stopping before I release left click?

Constantly when I try drag & drop on Dolphin & Firefox, the dragging stops mid-way before I stop holding left click, it’s a showstopper for me using KDE. I found others have this issue as well but is there anything I can about it? I’m using Wayland, NixOS, and a Logitech G604 mouse.

Can you please post what kinfo prints on your system?

Does your issue only arise when dragging files from Dolphin to Firefox?

What about Dolphin > Dolphin?

Output of kinfo:

Operating System: NixOS 26.05
KDE Plasma Version: 6.5.5
KDE Frameworks Version: 6.22.0
Qt Version: 6.10.1
Kernel Version: 6.12.67 (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 9600X 6-Core Processor
Memory: 16 GiB of RAM (14.8 GiB usable)
Graphics Processor 1: NVIDIA GeForce RTX 3090
Graphics Processor 2: AMD Ryzen 5 9600X 6-Core Processor

I meant dragging inside Dolphin as well as dragging inside Firefox, not between apps.

Yep it was my mouse having issues, one day it was fine and suddenly its not. I don’t have the issue when using another mouse.