Prevent that a full source preview of a child clears the master's bibfiles cache.

See #9158

(cherry picked from commit a9a7f38488)

src/Buffer.cpp

@@ -4719,8 +4719,9 @@ void Buffer::updateBuffer(UpdateScope scope, UpdateType utype) const
 	DocumentClass const & textclass = master->params().documentClass();
 
 	FileNamePairList old_bibfiles;
-	// do this only if we are the top-level Buffer
-	if (master == this) {
+	// Do this only if we are the top-level Buffer. We also need to account
+	// for the case of a previewed child with ignored parent here.
+	if (master == this && !d->ignore_parent) {
 		textclass.counters().reset(from_ascii("bibitem"));
 		reloadBibInfoCache();
 		// we will re-read this cache as we go through, but we need

status.23x

@@ -191,6 +191,11 @@ What's new
 
 - Ignore deleted material when generating a proposed label (bug 11102).
 
+- Reload citation list when undoing or redoing removal of bibliography
+  inset (bug 9158).
+
+- Fix some master/child issues with biblatex (bug 11083).
+
 
 * INTERNALS