Received the update yesterday and I can confirm that it's fixed. Thank you very much for responding so quickly!
I personally like the rounded tabs, but I have noticed a few more quirks:
https://orionfeedback.org/d/5114-rounded-last-tab-ui-glitch-when-dragging
https://orionfeedback.org/d/5115-hover-is-cut-off-when-hovering-next-to-the-active-tab
https://orionfeedback.org/d/5116-separator-remains-between-pinned-and-normal-tabs