Screen content disappear when sending message

[tlemarchand]

Screen content disappear sometimes when sending a message.
It occurs most of the time with long messages, and sometimes with short messages.

I uploaded a video to show you the problem :
https://youtu.be/hTXptJeMezk?t=39

[chrisballinger]

This bug is also driving me insane and is one of the blockers for the v4.3.0 release. The main issue is that it hasn't really been consistently reproducible for me, so if it seems more likely when sending long messages that is a big help.

Thanks!

[chrisballinger]

I think this fixes it: 68f9246

I'll try to put out a new beta soon. Are you on the beta group? https://goo.gl/forms/OSOfaqF2nMLaXJmH2

[chrisballinger]

Sigh, that didn't fix it.

[tlemarchand]

Thanks for your replies.
I'm not in the beta group for now, but I will subscribe when you'll release a beta with a potential fix !

Unfortunately I don't have any knowledge about iOS code, I cannot help you more.

This (mentioned also in #817 and possibly #1016) seems to happen when the new text being sent is more than one line.

I think it occurs because the scrollViewDidScroll method in OTRMessagesViewController is called BOTH where the scrollView is the JSQMessagesComposerTextView AND the JSQMessagesCollectionView. I don't think updateRangeOptions and whatever flags are set should occur as a result of the scrollView being the JSQMessagesComposerTextView.

In the scrollViewDidScroll method of OTRMessagesViewController, I added the following to filter out the updateRangeOptions from occurring when called by JSQMessagesComposerTextView:

if (!self.loadingMessages && ![scrollView isMemberOfClass:[JSQMessagesComposerTextView class]]) { ...

Still testing to make sure I didn't cause any other issues, but this seems to fix the blink/blank when sending.

[chrisballinger]

@GlacierSecurityInc Aha, good catch!

[chrisballinger]

Resolved in v4.3.6

[Ethica1Hack]

Well, it is not fixed well cause big chats when you scroll to the beginning of conversation or middle of it and you leave the screen, enter to it again it will disappear. You need to put in viewDidDisappear and viewWillDisappear on the bottom of function: [self scrollToBottomAnimated:NO]; This fix the issue !