diff --git a/loader/src/loader/LoaderImpl.cpp b/loader/src/loader/LoaderImpl.cpp
index 66fd73818..29c3d9132 100644
--- a/loader/src/loader/LoaderImpl.cpp
+++ b/loader/src/loader/LoaderImpl.cpp
@@ -406,32 +406,55 @@ void Loader::Impl::populateModList(std::vector<ModMetadata>& modQueue) {
                 });
             }
 
-            auto it = m_keybindSettings.find(keybind);
-            if (it == m_keybindSettings.end()) {
-                return ListenerResult::Propagate;
+            // build up all keybinds to look for, starting with the most specific to least specific
+            // this is for modifier fallthrough functionality
+            std::vector<Keybind> keybindsToCheck;
+            int baseMask = keybind.modifiers.value; 
+
+            for (int submask = baseMask; ; submask = (submask - 1) & baseMask) {
+                keybindsToCheck.push_back(Keybind(keybind.key, submask));
+                
+                if (submask == 0) {
+                    break; 
+                }
             }
 
+            std::ranges::sort(keybindsToCheck, [](const Keybind& a, const Keybind& b) {
+                return std::popcount(a.modifiers.value) > std::popcount(b.modifiers.value);
+            });
+
+            // now we run the code that already existed before the 
+            // modifier fallthrough functionality was added but we
+            // loop it through all modifier combinations we just found
             bool imeActive = CCIMEDispatcher::sharedDispatcher()->hasDelegate();
 
-            if (down) {
-                for (auto& setting : it->second) {
-                    if (imeActive && !setting->getAllowInTextInputs()) {
-                        continue;
-                    }
-                    if (!repeat) m_activeKeybinds[setting.get()] = keybind;
-                    if (KeybindSettingPressedEventV3(setting->getModID(), setting->getKey()).send(keybind, down, repeat, data.timestamp)) {
-                        return ListenerResult::Stop;
-                    }
+            for(const auto& keybind : keybindsToCheck) {
+                auto it = m_keybindSettings.find(keybind);
+                if (it == m_keybindSettings.end()) {
+                    continue;
                 }
-            } else {
-                for (auto& setting : it->second) {
-                    auto it2 = m_activeKeybinds.find(setting.get());
-                    if (it2 != m_activeKeybinds.end() && it2->second.key == data.key) {
-                        KeybindSettingPressedEventV3(setting->getModID(), setting->getKey()).send(keybind, down, repeat, data.timestamp);
-                        m_activeKeybinds.erase(it2);
+
+                if (down) {
+                    for (auto& setting : it->second) {
+                        if (imeActive && !setting->getAllowInTextInputs()) {
+                            continue;
+                        }
+                        if (!repeat) m_activeKeybinds[setting.get()] = keybind;
+                        if (KeybindSettingPressedEventV3(setting->getModID(), setting->getKey()).send(keybind, down, repeat, data.timestamp)) {
+                            return ListenerResult::Stop;
+                        }
+                    }
+                } else {
+                    for (auto& setting : it->second) {
+                        auto it2 = m_activeKeybinds.find(setting.get());
+                        if (it2 != m_activeKeybinds.end() && it2->second.key == data.key) {
+                            KeybindSettingPressedEventV3(setting->getModID(), setting->getKey()).send(keybind, down, repeat, data.timestamp);
+                            m_activeKeybinds.erase(it2);
+                        }
                     }
                 }
             }
+            
             return ListenerResult::Propagate;
         }).leak();