diff --git a/src/main/java/com/redhat/devtools/lsp4ij/features/highlight/LSPHighlightUsagesHandlerFactory.java b/src/main/java/com/redhat/devtools/lsp4ij/features/highlight/LSPHighlightUsagesHandlerFactory.java
index 34b0682d0..5310eb729 100644
--- a/src/main/java/com/redhat/devtools/lsp4ij/features/highlight/LSPHighlightUsagesHandlerFactory.java
+++ b/src/main/java/com/redhat/devtools/lsp4ij/features/highlight/LSPHighlightUsagesHandlerFactory.java
@@ -25,6 +25,7 @@
 import com.redhat.devtools.lsp4ij.LSPIJUtils;
 import com.redhat.devtools.lsp4ij.LanguageServersRegistry;
 import com.redhat.devtools.lsp4ij.client.indexing.ProjectIndexingManager;
+import com.redhat.devtools.lsp4ij.internal.SimpleLanguageUtils;
 import org.eclipse.lsp4j.DocumentHighlight;
 import org.eclipse.lsp4j.DocumentHighlightKind;
 import org.eclipse.lsp4j.TextDocumentIdentifier;
@@ -58,7 +59,13 @@ public class LSPHighlightUsagesHandlerFactory implements HighlightUsagesHandlerF
             return null;
         }
         List<LSPHighlightPsiElement> targets = getTargets(editor, file);
-        return targets.isEmpty() ? null : new LSPHighlightUsagesHandler(editor, file, targets);
+        if (targets.isEmpty()) {
+            // For a TEXT or textmate file, returning null here would make the IDE cache the empty result
+            // for the whole file, and it would stop sending 'textDocument/documentHighlight' until the document changes.
+            // See https://github.com/redhat-developer/lsp4ij/issues/1300
+            return SimpleLanguageUtils.isSupported(file.getLanguage()) ? new LSPHighlightUsagesHandler(editor, file, targets) : null;
+        }
+        return new LSPHighlightUsagesHandler(editor, file, targets);
     }
 
     private List<LSPHighlightPsiElement> getTargets(Editor editor, PsiFile psiFile) {