Splash window misplaced and multiplied under Niri Wayland compositor

[VaclavC]

Describe the bug
Splash window is misplaced and multiplied vertically under Niri Wayland compositor (and probably other tiling ones).

To Reproduce
Start Eclipse under Niri.

Expected behavior
Splash window should be in the center of the screen.

Screenshots

Environment:
Arch Linux or Ubuntu with Niri Wayland compositor

Version since
As far as I remember.

Workaround (or) Additional context
As a workaround one can add this to Niri config file:

window-rule {
        match app-id="java"
        match title="^Eclipse$"
        open-floating true
}

This can be probably solved by setting proper window role.