Windows since about XP supports showing each program instance on the bar or combining them. This is not a bug.
Here's a tutorial on controlling the bar: Look for “Combine taskbar buttons” at
https://www.howtogeek.com/225568/how-to-configure-and-customize-the-taskbar-in-windows-10/
Don’t know quite how to explain this minor ‘browser’ issue
I have Firefox set as my default browser. I have it on my ‘taskbar’. If I click a ‘link’ in Thunderbird or in a LibreOffice ‘word’ document Firefox opens but now I have “two” Firefox icons on my taskbar. “Clicking” on my “regular” Firefox icon opens another internet connection. I saw this ‘issue’ before the latest windows 10 update. I updated on October 3rd without issue, and this “Firefox” issue is still there. I don’t suppose its hurting anything, but of course I don’t know that. I ran my usual ‘anti-stuff’ and also ‘scan disk’.
Thanks in advance for any suggestions.


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