Cursor shows briefly when capturing mouse

[N3sbocaj]

Tested versions

Reproducible in 4.3, 4.0, 3.5.2

System information

Godot v4.3.stable.mono - Windows 10.0.22631 - Vulkan (Forward+) - dedicated NVIDIA GeForce RTX 3070 (NVIDIA; 32.0.15.6081) - Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz (12 Threads)

Issue description

When setting mouse mode to captured, the cursor can be briefly seen at the center of the window.

• It doesn't seem to matter when mouse mode is changed (_init, _ready, process).
• Happens more consistently when cursor is outside the window, but still very often when inside.
• Setting mouse mode to hidden before setting it to captured seems to fix it for when the mouse is inside the window, but not when outside

Steps to reproduce

• Run minimal reproduction project
• Place cursor either inside or outside window, but away from the center
• Press ui_left to capture mouse
• See that the cursor briefly shows at the center of the window

Minimal reproduction project (MRP)

capture-mouse-flicker.zip

[Mickeon]

Is this really a bug or a general limitation? Judging by the tested versions, it seems to be very long-standing. How do other OSes handle this, I wonder? Could use some testing.

[bruvzg]

It's not doing this on macOS. Seem like it's caused the order of operations, in case of Windows it's setting position and capture before hiding cursor.