meeting acceptance status not synchronised?

[jdpipe]

Your environment

TbSync version: 4.3
EAS-4-TbSync version: 4.4
Thunderbird version: 102.9.0
OS: Ubuntu 18.04 and 20.04

First example: In Outlook https://outlook.office.com/calendar I have a meeting which which shows up in dark colour, meaning I have accepted the invitation. This was an invitation from a person outside my organisation. I expect that in Thunderbird, after synchronizing via tbSync/EAS-4-TbSync, it would appear the same way in Thunderbird. The meeting appears in Thunderbird in a pale color, it says "you haven't responded to this invitation".

Second example:Another meeting, a recurring meeting invitation from someone in my organisation, in my Thunderbird, appears in dark colour, while appearing in light colour in Outlook online, with the message "you didn't respond".

I don't have steps to reproduce this issue, but it would appear that EAS-4-tbSync is not properly synchronising the acceptance status of my calendar invitations. Here there are examples showing that synchronisation may be failing in both directions, not just one.

I can try to work up a step-by-step test case if desired. But firstly -- do others see this behaviour working as expected? Or perhaps this is not implemented functionality?