Outlook asks to save when closing appointments without any change

see below some more visuals to reproduce:

Dear Fnurk, Have a good day!Thank you for your reply and clarification.Please allow me to explain something about this. I did it twice by following the steps in your post.The first time,
I open Outlook along with a blank new appointment without making any changes, then press and hold windows key + L, put laptop into lock screen mode, reopen, close blank appointment without any changes, yes, here a prompt box pops up asking me if to save the changes. I successfully reproduced your question. The result is same.
The second time,I closed Outlook, returned to the original state, startedmy second test. I opened outlook and selected someone else's calendar (a calendar created by a colleague), I don't have permission, here a prompt box will appear, "You don't have permission, do you want to ask XXX to share his or her Calendar with you?" Click yes, I open his calendar pop-up, make no changes (and no permission to change), then press and hold Windows Key + L, put the laptop into lock screen mode, reopen, close this calendar, but no prompt box appears here.In both test steps, the only difference is that when you open a new calendar or your own calendar (with permission to change), the cursor flashes on the detailed calendar information page. When I open a colleague's calendar (which I do not have permission to modify), the cursor does not appear on the page, which is similar to the read-only mode of mail, the system defaults to which I do not have permission to change, and when I lock the computer, log in again, close it, he does not appear any prompt.So, after comparison, guess that when there is a cursor, the system defaults you in edit mode, and in order to prevent you from losing the created operation due to the lock screen, you will be reminded to save your changes. For calendars that you don't have permission to change,  locking your computer won't trigger any prompts.Here are some of the differences I've observed. Thank you for your patience and understanding, and if you have any ideas, welcome to update via this post.

all the best,Regards,winter

ok great that you are able to reproduce it. the issue is indeed in the first test only, just my own calendar. During a normal workday you open invites to check for details often and lock your pc quite regular. Clicking through all these prompts is therefore quite annoying. Please help me in raising this ticket as a bug within Microsoft Outlook engineering teams and drive for a fix asap!

Dear Fnurk, Have a good day! Thank you for your reply.

I understand your requirement and sincerely apologize for the annoyance this issue has caused you. I will post feedback on Community (microsoft.com), Microsoft's webpage dedicated to collecting customer feedback on Outlook products. I will invite my team to vote on it, and also invite you to vote together, so that it will appear at the top of the page, and users who want the same will join the vote and comment when they see it, which makes it easier to quickly submit feedback to the product group.
when closing appointments without any change，disable the Outlook prompt "Want to save your changes?" · Community (microsoft.com)https://learn-attachment.microsoft.com/api/attachments/0ce7572e-b213-4e74-9ea0-262e2839ed7d?platform=QnA
Thanks again for your feedback, hopefully this will be disabled in future product updates.

At the same time, I also recommend that you log in to the admin centerhttps://admin.microsoft.com/ as an administrator account, create a ticket here and feedback your requirement, our engineer team will check and further assist on this issue.

Thank you for your patience and cooperation.
Happy New Year！
I wish you all the best.

Regards,Winter | Microsoft Community Moderator

Dear Fnurk...

the level of patience you have for the kind of responses you are getting from this forum is admirable. I just read all these threads hoping for a comment like:

" I was able to reproduce the bug" , "we have located the source" , "you need to do this".

Unfortunately I will keep looking.

Sometime ago it had gone away in my computer because of some "extensions" that I had disabled, now the dreaded message is back therefore here I am. Maybe I will keep looking for extensions as keyword and see if I find the fix.

Good luck!