Duplicate of #765
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I'm afraid I cannot reproduce this. Can you give some more information?

• Does text rendering work on the MC instance with the blank screen at all?
• Does it behave the same way vice versa?
• Are there other mods present?
  • If so, does it still happen if OC is the only mod present.
• Is this in a LAN hosted game or via a dedicated server?
• Is there anything that might be related in the logs?

i can show you on the server if you like

Sometimes it works when i login, sometimes it is broken when I log in, no clue why~
Couldn't seem to get it on my local OC-only server, so might be a mod interaction issue

i can show you on the server if you like

Maybe. First, please (try to) answer the above questions, though.

Also, which OC version is this happening with? There was an issue with initializing screens that has been fixed a while back, so if you're not using the latest version already, please grab that (or better yet, grab the latest dev build from http://ci.cil.li) and see if you can reproduce it with that.

I have experienced this, sometimes if you teleport away and back very quickly a screen will not render. Saying that, I was looking through the code changes and it looks like this has been addressed recently.

I have this happening with OC 1.4.5.28. Sometimes when I restart my client and connect to my server, I cannot see the contents on the screen until the screen updates.

I sortakinda think this may have been fixed? If anyone still has this in the latest builds, let me know and I'll reopen.