diff -r db47e814b4c5 -r f3e2811ecf3a ui/motif/toolkit.c
--- a/ui/motif/toolkit.c	Thu Jan 08 18:17:06 2026 +0100
+++ b/ui/motif/toolkit.c	Sat Jan 10 19:44:10 2026 +0100
@@ -221,6 +221,11 @@
 }
 
 void ui_call_mainthread(ui_threadfunc tf, void* td) {
+    if(uic_mainthread_calls_is_buffered()) {
+        uic_add_buffered_mainthread_call(tf, td);
+        return;
+    }
+    
     UiJob *job = malloc(sizeof(UiJob));
     memset(job, 0, sizeof(UiJob));
     job->job_func = tf;