Author: Chris Noxz <chris@noxz.tech>

diff -upN tabbed-0.8-a/tabbed.c tabbed-0.8-b/tabbed.c
--- tabbed-0.8-a/tabbed.c	2024-03-19 12:23:17.000000000 +0100
+++ tabbed-0.8-b/tabbed.c	2024-06-11 20:07:21.814961956 +0200
@@ -1132,6 +1132,11 @@ toggle(const Arg *arg)
 void
 unmanage(int c)
 {
+	int i, j;
+	unsigned int modifiers[] = { 0, LockMask, numlockmask,
+	                             numlockmask | LockMask };
+	KeyCode code;
+
 	if (c < 0 || c >= nclients) {
 		drawbar();
 		XSync(dpy, False);
@@ -1141,6 +1146,15 @@ unmanage(int c)
 	if (!nclients)
 		return;
 
+	/* ungrab keys */
+	for (i = 0; i < LENGTH(keys); i++) {
+		if ((code = XKeysymToKeycode(dpy, keys[i].keysym))) {
+			for (j = 0; j < LENGTH(modifiers); j++) {
+				XUngrabKey(dpy, code, keys[i].mod | modifiers[j], clients[c]->win);
+			}
+		}
+	}
+
 	if (c == 0) {
 		/* First client. */
 		nclients--;