Files are not removed from the index when deleting the directory in which these files were located

[sergii1]

HI, i use nextcloud 15.0.14, Full text search 1.2.10, Full text search - Elasticsearch Platform 1.2.6, Full text search - Files 1.2.10, elasticsearch 6.8.23.

This problem also occurs when using nextcloud 20.0.4, Full text search 20.0.2, Full text search - Elasticsearch Platform 20.0.3, Full text search - Files 20.0.4 , elasticsearch 6.8.23, Haven't looked at other versions.

I noticed that after searching in the line with the number of results, a larger number is displayed than the actual number of files. After that, I found that these files were not removed from the oc_fulltextsearch_indexes table. And remained in elastic.

The error is reproduced as follows:

1. Run occ fulltextsearch:live
2. I create a directory dir
3. I add files "1.txt" and "2.txt" to it with the content "test"
4. I enter the search query "test", the result displays the inscription "the search in Files for 'test' returned 2 results in 15 ms." and two files "1.txt" and "2.txt"
5. I delete the "dir" directory
6. I enter the search query "test", as a result, the inscription "the search in Files for 'test ' returned 2 results in 14 ms." is displayed, but the files found are not displayed, because they are removed.

The problem is that it is displayed that 2 results were found, although in fact there are no results.