雅各布，

官方文件未指定MS不再索引站点资源包.

Official document not specified that MS is not indexing the Site Property bag anymore.

但这是一本类似的帖子供您参考:

But here is an similar issue post for your reference:

https://techcommunity.microsoft.com/t5/SharePoint-Developer/PnP-Site-property-bag-items-not-indexed-anymore-by-search/td-p/69133

***的问候

Lisa Chen

Lisa Chen