Fix threading cleanup in performSearch

CHANGELOG.md

@@ -38,6 +38,8 @@ Note that this project **does not** adhere to [Semantic Versioning](http://semve
 
 ### Fixed
 
+- we fixed an issue where importing entries would not respect the library mode (BibTeX/biblatex)[#1018](https://github.com/JabRef/jabref/issues/1018)
+- We fixed an issue where an exception occured when importing entries from a web search [#7606](https://github.com/JabRef/jabref/issues/7606)
 - We fixed an issue where the table column sort order was not properly stored and resulted in unsorted eports [#7524](https://github.com/JabRef/jabref/issues/7524)
 - We fixed an issue where the value of the field `school` or `institution` would be printed twice in the HTML Export [forum#2634](https://discourse.jabref.org/t/problem-with-exporting-techreport-phdthesis-mastersthesis-to-html/2634)
 - We fixed an issue preventing to connect to a shared database. [#7570](https://github.com/JabRef/jabref/pull/7570)

src/main/java/org/jabref/logic/importer/fetcher/CompositeSearchBasedFetcher.java

@@ -8,9 +8,7 @@
 
 import org.jabref.logic.help.HelpFile;
 import org.jabref.logic.importer.FetcherException;
-import org.jabref.logic.importer.ImportCleanup;
 import org.jabref.logic.importer.SearchBasedFetcher;
-import org.jabref.model.database.BibDatabaseMode;
 import org.jabref.model.entry.BibEntry;
 
 import org.apache.lucene.queryparser.flexible.core.nodes.QueryNode;
@@ -48,7 +46,6 @@ public Optional<HelpFile> getHelpPage() {
 
     @Override
     public List<BibEntry> performSearch(QueryNode luceneQuery) throws FetcherException {
-        ImportCleanup cleanup = new ImportCleanup(BibDatabaseMode.BIBTEX);
         // All entries have to be converted into one format, this is necessary for the format conversion
         return fetchers.parallelStream()
                        .flatMap(searchBasedFetcher -> {
@@ -60,7 +57,6 @@ public List<BibEntry> performSearch(QueryNode luceneQuery) throws FetcherExcepti
                            }
                        })
                        .limit(maximumNumberOfReturnedResults)
-                       .map(cleanup::doPostCleanup)
                        .collect(Collectors.toList());
     }
 }