Tool Controls panel height depends on selected tool in Win32 theme and Smaller button size

Steps to reproduce:

• Open Inkscape 1.0
• Go to Edit → Preferences → Interface → Theme
• Choose ‘win32’ GTK theme
• Chose ‘Smaller’ control bar icon size
• Restart Inkscape to apply the new icon sizes
• Chose a non-shape tool from the toolbox (e.g. Edit Paths), then chose a shape tool (e.g. Rectangle).

What happened?

The height of the Tool Controls panel is changed. All the layout below jumps up and down. (See the gif below.)

What should have happened?

The panel height should be the same for all tools.

Comment

Shape tools have the Fill/Stroke controls at the right side of the panel. Those controls do not fit into the ‘Smaller’ panel size.

Is it possible to place Fill and Stroke horizontally when the ‘Smaller’ size is chosen? If not, maybe, the font size and/or paddings of the Fill/Stroke controls can be reduced?

Inkscape Version and Operating System:

• Inkscape Version: 1.0 (4035a4fb49, 2020-05-01)
• Operating System: Windows, Linux
• Operating System version: Windows 7 SP1 (6.1.7601), Windows 10 1909 (10.0.18363.778), Linux Mint 19.3

Screenshot (animated gif)