Color Label Buttons - Unexpected Behavior

Question

I have had two issues with the color label buttons on the toolbar in LR3:
- When a custom filter is being used and then one of the color buttons is pressed to change the color, the resulting color is not the selected color.  For example, if the "green" button is pressed, the color changes to "red".
- Have also noticed that under certain circumstances, just hovering the mouse over the "red" button causes the color to change without actually pressing the button.  So if a custom filter is being used (filter by color), just passing the mouse over the "red' button causes the image to disappear.

Answer 1

- set filters to off using the drop-down list on the right side of the filmstrip
- folder has 6 images in it
- mark 2 as flagged
- mark same 2 as color yellow
- select to filter by color yellow using the filter buttons on the filmstrip
- go into loupe view on the first image
- click the green color button on the toolbar
- have gotten 2 results repeating this:
         1. in some cases the image turns green
         2. in some cases removes the color yellow and turns the 2nd image green (all with just one click on the first image)
For the issue with hovering over the red button, I have not been able to repeat this today.  I will continue to look for the specific conditions that caused this.
System Info
Lightroom version: 3.0 [677000]
Operating system: Windows 7 Ultimate Edition
Version: 6.1 [7600]
Application architecture: x86
System architecture: x86
Physical processor count: 2
Processor speed: 1.9 GHz
Built-in memory: 3070.9 MB
Real memory available to Lightroom: 716.8 MB
Real memory used by Lightroom: 628.7 MB (87.7%)
Virtual memory used by Lightroom: 686.1 MB
Memory cache size: 60.4 MB
System DPI setting: 96 DPI
Desktop composition enabled: Yes
Displays: 1) 1920x1200, 2) 1920x1200