diff --git a/src/insets/InsetBox.cpp b/src/insets/InsetBox.cpp
index ec11374496..ccd1d12107 100644
--- a/src/insets/InsetBox.cpp
+++ b/src/insets/InsetBox.cpp
@@ -212,10 +212,13 @@ bool InsetBox::getStatus(Cursor & cur, FuncRequest const & cmd,
 	switch (cmd.action()) {
 
 	case LFUN_INSET_MODIFY:
-		if (cmd.getArg(0) == "changetype")
-			flag.setOnOff(cmd.getArg(1) == params_.type);
-		flag.setEnabled(true);
-		return true;
+		if (cmd.getArg(0) == "changetype") {
+			string const type = cmd.getArg(1);
+			flag.setOnOff(type == params_.type);
+			flag.setEnabled(!params_.inner_box || type != "Framed");
+			return true;
+		}
+		return InsetCollapsable::getStatus(cur, cmd, flag);
 
 	case LFUN_INSET_DIALOG_UPDATE:
 		flag.setEnabled(true);
@@ -309,7 +312,8 @@ void InsetBox::latex(otexstream & os, OutputParams const & runparams) const
 		os << "\\shadowbox{";
 		break;
 	case Shaded:
-		// later
+		// must be set later becaue e.g. the width settings only work when
+		// it is inside a minipage or parbox
 		break;
 	case Doublebox:
 		os << "\\doublebox{";
diff --git a/status.20x b/status.20x
index 1670f28ac0..07fd81b76e 100644
--- a/status.20x
+++ b/status.20x
@@ -52,6 +52,8 @@ What's new
   text which is not explicitly marked in a different language, irrespective
   of the multilingual status, except for LTR<=>RTL changes.
 
+- disable impossible settings in context menu of boxes (bug 7849).
+
 - Augmented the tex2lyx --help message with the default paths (bug 6827).
 
 - New command-line switch -v (--version) for tex2lyx showing build information