What is conflict of Quickstart?

[Koji]

There is the following description in Release Notes:
https://libreoffice.org/download/release-notes/

For Windows users that have Apache OpenOffice installed, we advise uninstalling that beforehand. The two programs register the same file type associations and will conflict when the Quickstart feature is installed and enabled.

However, I can’t find the detail of that conflict of QuickStarter of Apache OpenOffice.

I tried the following operation.

Steps to reproduce(Case1):
1)Installed the LibreOpenOffice(Apache OpenOffice).
2)Launch the LibreOpenOffice(Apache OpenOffice) of Quickstart.
3)Installed the Apache OpenOffice(LibreOpenOffice).

Steps to reproduce(Case2):
1)Launch the LibreOpenOffice(Apache OpenOffice) of Quickstart.
2)Click under Tools / Extension Manager / Add(Check for updates…) menu.

Current behavior:
Nothing happens

What is conflict of Quickstart?
Please tell me the Steps to Reproduce and case.

[ROSt53]

@Koji - I saw your question also in the Japanese AskLibO forum; let me answer here. I interpret the advice to uninstall AOO as a pre-caution. That you do not have a problem with both application installed is on the other side not a surprise because you can also install 2 versions of LibO on the same machine (also i never did it). You might find some information when you search the BugZilla entries for LibO: https://bugs.freedesktop.org/query.cgi?query_format=advanced&bug_status=UNCONFIRMED&bug_status=NEW&bug_status=ASSIGNED&bug_status=REOPENED&bug_status=VERIFIED&bug_status=NEEDINFO&bug_status=PLEASETEST&product=LibreOffice