diff --git a/res/scripts/stdlib.lua b/res/scripts/stdlib.lua
index c9f38835..71ba2f4f 100644
--- a/res/scripts/stdlib.lua
+++ b/res/scripts/stdlib.lua
@@ -413,15 +413,9 @@ end
 local __vc_coroutines = {}
 local __vc_named_coroutines = {}
 local __vc_next_coroutine = 1
-local __vc_coroutine_error = nil
 
 function __vc_start_coroutine(chunk)
-    local co = coroutine.create(function()
-        local status, err = pcall(chunk)
-        if not status then
-            __vc_coroutine_error = err
-        end
-    end)
+    local co = coroutine.create(chunk)
     local id = __vc_next_coroutine
     __vc_next_coroutine = __vc_next_coroutine + 1
     __vc_coroutines[id] = co
@@ -431,10 +425,10 @@ end
 function __vc_resume_coroutine(id)
     local co = __vc_coroutines[id]
     if co then
-        coroutine.resume(co)
-        if __vc_coroutine_error then
-            debug.error(__vc_coroutine_error)
-            error(__vc_coroutine_error)
+        local success, err = coroutine.resume(co)
+        if not success then
+            debug.error(err)
+            error(err)
         end
         return coroutine.status(co) ~= "dead"
     end
diff --git a/res/shaders/main.glslf b/res/shaders/main.glslf
index 4992c36b..12e96eab 100644
--- a/res/shaders/main.glslf
+++ b/res/shaders/main.glslf
@@ -20,6 +20,9 @@ void main() {
         if (alpha < 0.2f)
             discard;
         alpha = 1.0;
+    } else {
+        if (alpha < 0.002f)
+            discard;
     }
     f_color = mix(a_color * tex_color, vec4(fogColor,1.0), 
               min(1.0, pow(depth*u_fogFactor, u_fogCurve)));
diff --git a/src/coders/lua_parsing.cpp b/src/coders/lua_parsing.cpp
index f30aab37..3c0d3a53 100644
--- a/src/coders/lua_parsing.cpp
+++ b/src/coders/lua_parsing.cpp
@@ -113,8 +113,9 @@ public:
             auto start = currentLocation();
             if (is_lua_identifier_start(c)) {
                 auto name = parseLuaName();
+                TokenTag tag = (is_lua_keyword(name) ? TokenTag::KEYWORD : TokenTag::NAME);
                 emitToken(
-                    is_lua_keyword(name) ? TokenTag::KEYWORD : TokenTag::NAME,
+                    tag,
                     std::move(name),
                     start
                 );
diff --git a/src/logic/scripting/lua/libs/libnetwork.cpp b/src/logic/scripting/lua/libs/libnetwork.cpp
index d1edf185..304cf5c8 100644
--- a/src/logic/scripting/lua/libs/libnetwork.cpp
+++ b/src/logic/scripting/lua/libs/libnetwork.cpp
@@ -89,7 +89,8 @@ static int l_closeserver(lua::State* L) {
 static int l_send(lua::State* L) {
     u64id_t id = lua::tointeger(L, 1);
     auto connection = engine->getNetwork().getConnection(id);
-    if (connection == nullptr) {
+    if (connection == nullptr ||
+        connection->getState() == network::ConnectionState::CLOSED) {
         return 0;
     }
     if (lua::istable(L, 2)) {
@@ -167,7 +168,9 @@ static int l_is_alive(lua::State* L) {
     u64id_t id = lua::tointeger(L, 1);
     if (auto connection = engine->getNetwork().getConnection(id)) {
         return lua::pushboolean(
-            L, connection->getState() != network::ConnectionState::CLOSED
+            L,
+            connection->getState() != network::ConnectionState::CLOSED ||
+                connection->available() > 0
         );
     }
     return lua::pushboolean(L, false);
diff --git a/src/logic/scripting/lua/lua_util.cpp b/src/logic/scripting/lua/lua_util.cpp
index 842c7859..d008cf45 100644
--- a/src/logic/scripting/lua/lua_util.cpp
+++ b/src/logic/scripting/lua/lua_util.cpp
@@ -270,12 +270,13 @@ scripting::common_func lua::create_lambda(State* L) {
     return [=](const std::vector<dv::value>& args) -> dv::value {
         if (!get_from(L, LAMBDAS_TABLE, *funcptr, false))
             return nullptr;
-        int top = gettop(L) + 1;
+        int top = gettop(L) - 1;
         for (const auto& arg : args) {
             pushvalue(L, arg);
         }
         if (call(L, args.size(), 1)) {
             int nres = gettop(L) - top;
+            assert(nres >= 0);
             if (nres) {
                 auto result = tovalue(L, -1);
                 pop(L, 1 + nres);