--- a/src/glcompiler.cpp Wed Mar 07 19:30:03 2018 +0200 +++ b/src/glcompiler.cpp Wed Mar 07 19:30:29 2018 +0200 @@ -511,6 +511,8 @@ { for (int row = first; row <= last; row += 1) forgetObject(m_renderer->model()->index(row)); + + needMerge(); } void GLCompiler::handleDataChange(const QModelIndex& topLeft, const QModelIndex& bottomRight)