This problem existed in v9.81 and still exists in v24.3.0.

Unfortunately this is not repeatable with the CommandBars Customization sample of v24.3.0.

This screen grab shows the problem.

uploads/9740/shortcutassign.zip" rel="nofollow - uploads/9740/shortcutassign.zip

This is a test project.

uploads/9740/testprj.zip" rel="nofollow - uploads/9740/testprj.zip

Open the project in VB6 and run it. Right-click in the toolbar and pick Customize.

Click on the Keyboard tab, enter M as the shortcut and press assign.

Repeat. You get a warning message which is not modal. Move this to the side.

Click in the Customize dialog. Press Assign again. You get another warning message.

Click in the Customize dialog.

Try to click on the message windows and neither receives focus. This also happens if only one was presented.

Now you have to kill the application which means VB6 if you run it from there.

In v24.3.0:

If you modify the Customization event to specify Options.ShowListNavigation = True, then you still get the multiple messages but they will receive focus and can be closed.

However: This introduces the problem that you can't now drag tools around - raised as a separate forum post.