The SP2019 on premises Lotus Notes connector references the Lotus C++ API Toolkit which is out of support with HCL (Lotus Notes owner). Please update the Lotus Notes Connector to use the C API and be compatible with versions later than R8 client (which is also outdated). There is significant business use with later versions.

Search driven applications would be much more powerfull if it is possible to use (properties of) search results to run a new query

Two results that could be improved:
Links: .URL files currently automatically download and show an error warning. These should by default open in a new tab
Site Pages (text web part): The text that is hit highlighted on the page should be the text that is viewed when the user navigates to the page. For pages with considerable text and multiple headers, it would be nice if the link brought you to the header that contains the hit highlighted text (either in the header itself, or under it)

Search doesn't work (anymore) when searching for items with a single quote.

For example, create a simple generic list. Add an item with It's working in its title.

After the data is crawled try to search for

"It's working"

(double quotes are part of the query, to search exactly for this string).

There's no known escaping syntax.

Such characters should be searchable.
Thanks

By default, when you set a site to be a home site, the search scope of the site is set to tenant wide. We don't want that, we want it to be Hub wide. If we run the PnP PowerShell to set the SearchScope back to "2" for Hub, then it gets ignored and the search scope remains as Tenant! Please let us change the search scope of a Home site. Thanks

When we view modern search results, if we have created folders in Document Libraries to organise the documents, then these folders appear in the search results and normally first. The users do not need to see the folders, they are only used for site owners to organise the documents, so we want the option of being able to hide document library folders from the search results

When we view results in modern search, the results for Site Pages do not show the thumbnail image. The results show this image for News Posts, Office documents and PDFs, but not Site Pages. I presume this is a bug?!?

It seems that the People webpart already does a simple directory in Edit mode. It would be nice to have a simple employee/company directory that can be added to a modern page.

*English follows Japanese
■Title(件名)：
ファイル サーバーの検索について
Searching in file servers

■Description(内容):
MOSS 2007 と同様に、SharePoint Online でも検索範囲に ファイル サーバーを含めるように機能拡張を要望します。
MOSS 2007 から SharePoint Online への移行にあたり、これまで使用していた機能を継続して利用したいため。
Even after performing migration from MOSS 2007 to SharePoint Online, we want to continue using the features that we have used up to now, so we hope that SharePoint Online will include file servers inside its search boundaries just like MOSS 2007.

Moving the Search window to the top of the page means it does not load.
The scroll bar also does not load.
You must reload the page to see both.

*English follows Japanese
■Title(件名)：
モダンUIの検索の設定について
Regarding Modern UI search settings

■Description(内容):
クラシック UI のサイトのページであれば、検索結果のクエリを編集して特定のリストやライブラリを除外することができるが、モダン UI の検索結果は編集ができない。
モダン UI の検索結果にて、特定のリストを表示しないようにする機能を希望します。
Search queries can be edited and specific lists and libraries can be removed for Classic UI site pages, but Modern UI search results cannot be edited.
Thus I hope that a feature can be implemented to hide specific lists for Modern UI search results.

Currently you cannot search for any files in the recycle bin. It is incredibly frustrating. Especially when a large number of files have been deleted and you need to find a specific file to restore. Any other file storing system generally has this feature.

*English follows Japanese

■Title(件名)：
サイト コレクションでユーザーにアクセス権限を付与する際の検索について
Site collection search when granting access permissions to users

■Description(内容):
SharePoint Online のサイト コレクションにてユーザーにアクセス権限を付与する際の検索について、現状では前方一致のみで検索が行われるが、SharePoint 2010 などのように前方一致以外の検索も有効にして欲しい。
Currently when searching SharePoint Online’s Site Collection while granting access permissions to users, the search is only done for matching prefixes. Please improve the search function so that it works like SharePoint 2010 where other search methods will be valid as well, not just prefix searching.

Please enhance accuracy on detectedlanguage property. we have a issue about search result. We use the search query tool and found that some list item are struggle on detectedlanguage.
For example, it has some "zh-tw" and "en-us" content. If we search with zh-tw content, it would get result. However, if we search with english some part of words, it didn't correctly get result.All we can do is do following reference
https://docs.microsoft.com/en-us/archive/blogs/nicolasu/sp2013-how-to-influence-the-language-detection-at-the-documentitem-level

It caused the unfriendly user experience. Please help to improve this feature.

When searching for a document/folder, if you find it, you cannot Move/Copy it. You have to manually navigate to the exact document library path location to use the “Move/Copy” features.
Please help improve this.

External Users can not search for Documents and Pages - only Images and Lists/Libraries - on shared Sites.
Please Add Pages and Documents to their Search Results as well.

There's currently a way to force or disable the prompt for confirmation on Set-SPOHomeSite as it doesn't allow Force nor Confirm parameters.

https://docs.microsoft.com/en-us/powershell/module/sharepoint-online/set-spohomesite?view=sharepoint-ps