Nope. I'm stumped. I have over 70 JB tweaks and apps installed and no problems here. I don't think this has anything to do with your jailbreak.
yes, I could agree with you, before jailbreaking, the Open In.. works but in a very slow process, it took 1 minute or more to open in other apps, and sometimes it failed.
after jailbreaking, not working at all.
thinking of upgrading to newer OS, and jailbreaking afterwards