hahahahaha
THANK YOU!!!!!!!!
I had seen this occur but thought it was just me, as I couldn't figure out what I'd done and couldn't reproduce..
To reproduce:
1. Open at least 3 tabs.
2. click on tab1 so it is active
3. right click on tab2 and choose close
4. click on tab3
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Phil added:
Also, to reproduce:
1. Open two tabs.
2. Select first tab.
3. Close it.
4. Open it again.