diff --git a/src/backend.cpp b/src/backend.cpp
index 79a2d71..7e24585 100644
--- a/src/backend.cpp
+++ b/src/backend.cpp
@@ -486,6 +486,8 @@ void X11Backend::StackClients(const WManager::Container *proot){
 
 	appendixQueue.clear();
 	for(auto &p : *pstackAppendix){
+		if(!p.second)
+			continue;
 		if(p.first){
 			appendixQueue.push_back(p);
 			continue;
@@ -500,6 +502,8 @@ void X11Backend::StackClients(const WManager::Container *proot){
 	StackRecursive(proot);
 
 	for(auto m = appendixQueue.begin(); m != appendixQueue.end();){
+		if(!(*m).second)
+			continue;
 		auto k = std::find_if(appendixQueue.begin(),appendixQueue.end(),[&](auto &p)->bool{
 			return (*m).first == p.second;
 		});
@@ -519,6 +523,8 @@ void X11Backend::StackClients(const WManager::Container *proot){
 	}
 
 	for(auto &p : appendixQueue){ //stack the remaining (untransient) windows
+		if(!p.second)
+			continue;
 		X11Client *pclient11 = static_cast<X11Client *>(p.second);
 
 		static uint values[1] = {XCB_STACK_MODE_ABOVE};
@@ -640,7 +646,7 @@ void Default::Start(){
 		|XCB_EVENT_MASK_STRUCTURE_NOTIFY
 		|XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY
 		|XCB_EVENT_MASK_EXPOSURE
-		|XCB_EVENT_MASK_PROPERTY_CHANGE,0,0,0}; //[2] for later use
+		|XCB_EVENT_MASK_PROPERTY_CHANGE,0,0,0}; //[4] for later use
 	xcb_void_cookie_t cookie = xcb_change_window_attributes_checked(pcon,pscr->root,XCB_CW_EVENT_MASK,values);
 	xcb_generic_error_t *perr = xcb_request_check(pcon,cookie);
 
@@ -876,7 +882,7 @@ sint Default::HandleEvent(bool forcePoll){
 			}
 
 			//center the window to screen, otherwise it might end up to the left upper corner
-			if(!allowPositionConfig){
+			/*if(!allowPositionConfig){
 				if((rect.x == 0 && pev->value_mask & XCB_CONFIG_WINDOW_X) || (mrect != configCache.end() && (*mrect).second.x == 0 && !(pev->value_mask & XCB_CONFIG_WINDOW_X))){ //TODO: need this same check in MAP_REQUEST
 					rect.x = (pscr->width_in_pixels-rect.w)/2;
 					pev->value_mask |= XCB_CONFIG_WINDOW_X;
@@ -885,7 +891,7 @@ sint Default::HandleEvent(bool forcePoll){
 					rect.y = (pscr->height_in_pixels-rect.h)/2;
 					pev->value_mask |= XCB_CONFIG_WINDOW_Y;
 				}
-			}
+			}*/
 			
 			if(mrect == configCache.end()){
 				//an entry should always be present, since CREATE_NOTIFY creates one
@@ -1153,7 +1159,7 @@ sint Default::HandleEvent(bool forcePoll){
 				netClientList.push_back(p.first->window);
 			xcb_change_property(pcon,XCB_PROP_MODE_REPLACE,pscr->root,ewmh._NET_CLIENT_LIST,XCB_ATOM_WINDOW,32,netClientList.size(),netClientList.data());
 
-			xcb_grab_button(pcon,0,pev->window,XCB_EVENT_MASK_BUTTON_PRESS,//|XCB_EVENT_MASK_BUTTON_RELEASE,
+			xcb_grab_button(pcon,0,pev->window,XCB_EVENT_MASK_BUTTON_PRESS,
 				XCB_GRAB_MODE_ASYNC,XCB_GRAB_MODE_ASYNC,pscr->root,XCB_NONE,1,XCB_MOD_MASK_1);
 	
 			//check fullscreen
@@ -1540,8 +1546,10 @@ sint Default::HandleEvent(bool forcePoll){
 			dragRootX = pev->root_x;
 			dragRootY = pev->root_y;
 
-			xcb_grab_pointer(pcon,0,pscr->root,XCB_EVENT_MASK_BUTTON_RELEASE|XCB_EVENT_MASK_POINTER_MOTION,
+			xcb_grab_pointer(pcon,0,pscr->root,
+				XCB_EVENT_MASK_BUTTON_RELEASE|XCB_EVENT_MASK_POINTER_MOTION,
 				XCB_GRAB_MODE_ASYNC,XCB_GRAB_MODE_ASYNC,pscr->root,XCB_NONE,XCB_CURRENT_TIME);
+			//xcb_allow_events(pcon,XCB_ALLOW_REPLAY_POINTER,pev->time);
 			}
 			break;
 		case XCB_BUTTON_RELEASE:{
diff --git a/src/container.cpp b/src/container.cpp
index 6a6fb6b..8fdeadb 100644
--- a/src/container.cpp
+++ b/src/container.cpp
@@ -269,6 +269,8 @@ void Container::SetFullscreen(bool toggle){
 	else flags &= ~FLAG_FULLSCREEN;
 
 	Fullscreen1();
+	if(flags & FLAG_FLOATING)
+		return;
 	Translate();
 }
 
@@ -615,6 +617,8 @@ void Container::Stack(){
 
 void Container::SetLayout(LAYOUT layout){
 	this->layout = layout;
+	if(flags & FLAG_FLOATING)
+		return;
 	Translate();
 }
 
diff --git a/src/main.cpp b/src/main.cpp
index db5b519..2322e2d 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -406,7 +406,7 @@ class DefaultBackend : public Backend::Default, public RunBackend{
 			Backend::X11Container *pcontainer11 = static_cast<Backend::X11Container *>(containerInt.pcontainer);
 			Backend::X11Client *pclient11 = SetupClient(pcontainer11,pcreateInfo,pshaderName);
 			pcontainer11->SetClient(pclient11);
-			if(containerInt.pcontainer->flags & WManager::Container::FLAG_FLOATING)
+			if(pclient11 && containerInt.pcontainer->flags & WManager::Container::FLAG_FLOATING)
 				stackAppendix.push_back(StackAppendixElement(pcreateInfo->pstackClient,pclient11));
 
 			containerInt.DeferredPropertyTransfer();
@@ -498,7 +498,8 @@ class DefaultBackend : public Backend::Default, public RunBackend{
 		static WManager::Client dummyClient(0); //base client being unavailable means that the client is stacked on top of everything else
 	
 		pcontainer->flags |= WManager::Container::FLAG_FLOATING;
-		stackAppendix.push_back(StackAppendixElement(&dummyClient,pcontainer->pclient));
+		if(pcontainer->pclient)
+			stackAppendix.push_back(StackAppendixElement(&dummyClient,pcontainer->pclient));
 
 		pcontainer->pParent = proot;
 		pcontainer->Focus();