Facebook share panel pops up but message is always empty?

The following code was working well in iOS to share some message via Facebook:

options = { service = "facebook", message = "Hello, this is a share message", } native.showPopup( "social", options)

However, I don’t know since when (probably some iOS updates), the Facebook sharing panel still pops up, however the content becomes empty (the message is always empty instead of showing “Hello, this is a share message” in the example above).

Does anyone see this problem too?

I found the log says 

WARNING: native.showPopup( social ) cannot accept pre-filled messages for Facebook as of iOS 8.0. See facebook's platform policy at: https://developers.facebook.com/docs/apps/review/prefill

Is there any workaround? How am I going to share an article link without pre-filling the link address into the message? The users cannot (and will not) input an meaningless address link by themselves.

Well, after some research, I guess I can only do 

options= {     url = some\_url, }

without the pre-filling message.

I found the log says 

WARNING: native.showPopup( social ) cannot accept pre-filled messages for Facebook as of iOS 8.0. See facebook's platform policy at: https://developers.facebook.com/docs/apps/review/prefill

Is there any workaround? How am I going to share an article link without pre-filling the link address into the message? The users cannot (and will not) input an meaningless address link by themselves.

Well, after some research, I guess I can only do 

options= {     url = some\_url, }

without the pre-filling message.