Icons sizes are inconsistent when row size is increased and 'Adjust size automatically' is switched on

About Xfce:

• OS Name: openSUSE Tumbleweed
• OS Type: 64-bit
• Xfce Version: 4.16
• Distributor: openSUSE

Steps to reproduce bug:

1. Right click on Panel
2. Panel > Panel Preferences…
3. Change Display tab settings to the following:

General -> Mode -> Horizontal

Measurements -> Row size (pixels) -> 50

4. Observation: The panel expands vertically, as shown below:

5. Change Appearance tab settings to the following:

Icons -> Adjust size automatically -> ON

6. Observation: Not all icons are resized (in this case enlarged) to adjust to the new size of the panel:

What didn't resize:

• Font ('Menu', 'Downloads', 'Panel Preferences', Clock time)
• Icons for Bluetooth, Wi-Fi, Package Update Indicator