diff --git a/src/main/resources/assets/opencomputers/loot/openos/bin/sh.lua b/src/main/resources/assets/opencomputers/loot/openos/bin/sh.lua
index 8a724be71..d4e4dd9db 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/bin/sh.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/bin/sh.lua
@@ -31,8 +31,8 @@ if #args == 0 then
       elseif command ~= "" then
         --luacheck: globals _ENV
         local result, reason = sh.execute(_ENV, command)
-        if not result then
-          io.stderr:write((reason and tostring(reason) or "unknown error") .. "\n")
+        if not result and reason then
+          io.stderr:write(tostring(reason), "\n")
         end
       end
     elseif command == nil then -- false only means the input was interrupted
diff --git a/src/main/resources/assets/opencomputers/loot/openos/lib/sh.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/sh.lua
index f483aee22..877e9b4a3 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/lib/sh.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/lib/sh.lua
@@ -198,7 +198,7 @@ function sh.execute(env, command, ...)
   if type(words) ~= "table" then
     return words, reason
   elseif #words == 0 then
-    return true, 0
+    return true
   end
 
   -- MUST be table.pack for non contiguous ...
diff --git a/src/main/scala/li/cil/oc/client/renderer/tileentity/ScreenRenderer.scala b/src/main/scala/li/cil/oc/client/renderer/tileentity/ScreenRenderer.scala
index 7300228f9..0eafd22f0 100644
--- a/src/main/scala/li/cil/oc/client/renderer/tileentity/ScreenRenderer.scala
+++ b/src/main/scala/li/cil/oc/client/renderer/tileentity/ScreenRenderer.scala
@@ -51,10 +51,14 @@ object ScreenRenderer extends TileEntitySpecialRenderer[Screen] {
       return
     }
 
+    // y = block.bottom - player.feet
+    // eye is higher, so the y delta should be more negative
+    val eye_delta: Double = y - Minecraft.getMinecraft.thePlayer.getEyeHeight
+
     // Crude check whether screen text can be seen by the local player based
     // on the player's position -> angle relative to screen.
     val screenFacing = screen.facing.getOpposite
-    if (screenFacing.getFrontOffsetX * (x + 0.5) + screenFacing.getFrontOffsetY * (y + 0.5) + screenFacing.getFrontOffsetZ * (z + 0.5) < 0) {
+    if (screenFacing.getFrontOffsetX * (x + 0.5) + screenFacing.getFrontOffsetY * (eye_delta + 0.5) + screenFacing.getFrontOffsetZ * (z + 0.5) < 0) {
       return
     }
 
diff --git a/src/main/scala/li/cil/oc/common/Proxy.scala b/src/main/scala/li/cil/oc/common/Proxy.scala
index 0ec354f94..72c1b90ab 100644
--- a/src/main/scala/li/cil/oc/common/Proxy.scala
+++ b/src/main/scala/li/cil/oc/common/Proxy.scala
@@ -77,12 +77,21 @@ class Proxy {
 
     api.API.config = Settings.get.config
 
-    if (LuaStateFactory.include52) {
-      api.Machine.add(classOf[NativeLua52Architecture])
-    }
+    // Weird JNLua bug identified
+    // When loading JNLua (for either 5.2 or 5.3 lua state) there is a static section that the library loads
+    // being static, it loads once regardless of which lua state is loaded first
+    // static { REGISTRYINDEX = lua_registryindex(); }
+    // The problem is that lua_registryindex was removed in 5.3
+    // Thus, if we load JNLua from a lua5.3 state first, this static section fails
+    // We must load 5.2 first, AND we know 5.3 will likely fail to load if 5.2 failed
+    val include52: Boolean = LuaStateFactory.include52
+    // now that JNLua has been initialized from a lua52 state, we are safe to check 5.3
     if (LuaStateFactory.include53) {
       api.Machine.add(classOf[NativeLua53Architecture])
     }
+    if (include52) {
+      api.Machine.add(classOf[NativeLua52Architecture])
+    }
     if (LuaStateFactory.includeLuaJ) {
       api.Machine.add(classOf[LuaJLuaArchitecture])
     }