diff -r db47e814b4c5 -r f3e2811ecf3a ui/common/threadpool.c
--- a/ui/common/threadpool.c	Thu Jan 08 18:17:06 2026 +0100
+++ b/ui/common/threadpool.c	Sat Jan 10 19:44:10 2026 +0100
@@ -30,6 +30,7 @@
 
 #include "threadpool.h"
 #include "context.h"
+#include <cx/linked_list.h>
 
 #include <pthread.h>
 #include <stdio.h>
@@ -38,6 +39,56 @@
 
 static threadpool_job kill_job;
 
+
+
+static pthread_mutex_t mc_buffer_mutex;
+static CxList *mainthread_call_buffer;
+static volatile int mainthread_call_buffered = 0;
+
+typedef struct UiMainCall {
+    ui_threadfunc func;
+    void *data;
+} UiMainCall;
+
+void uic_init_threads(void) {
+    pthread_mutex_init(&mc_buffer_mutex, NULL);
+    mainthread_call_buffer = cxLinkedListCreate(NULL, sizeof(UiMainCall));
+}
+
+int uic_mainthread_calls_is_buffered(void) {
+    return mainthread_call_buffered;
+}
+
+void uic_add_buffered_mainthread_call(ui_threadfunc func, void *data) {
+    pthread_mutex_lock(&mc_buffer_mutex);
+    UiMainCall call;
+    call.func = func;
+    call.data = data;
+    cxListAdd(mainthread_call_buffer, &call);
+    pthread_mutex_unlock(&mc_buffer_mutex);
+}
+
+
+void ui_buffer_mainthread_calls(UiBool enable_buffering) {
+    mainthread_call_buffered = enable_buffering;
+    if(!enable_buffering) {
+        ui_exec_buffered_mainthread_calls();
+    }
+}
+void ui_exec_buffered_mainthread_calls(void) {
+    pthread_mutex_lock(&mc_buffer_mutex);
+    CxIterator i = cxListIterator(mainthread_call_buffer);
+    cx_foreach(UiMainCall *, call, i) {
+        if(call->func) {
+            call->func(call->data);
+        }
+    }
+    cxListClear(mainthread_call_buffer);
+    pthread_mutex_unlock(&mc_buffer_mutex);
+}
+
+
+
 UiThreadpool* threadpool_new(int min, int max) {
     UiThreadpool *pool = malloc(sizeof(UiThreadpool));
     pool->queue = ui_queue_create();