Issue with System Notifications not showing after lengthy processing times

[thetuningspoon]

I am experiencing an issue with the System Notifications module in 2.6.3. I am using a hook before saveReady() which does a call to PayPal and receives a response. I am adding some notifications based on the response I get from PayPal in order to let the user know whether it was a success or a failure.

For some reason it seems that the extra delay in processing that this introduces results in the notifications not displaying when the page finally reloads. I don't see either my custom notifications or the built in ones confirming the page save.

I've narrowed this issue down to the System Notifications module, since uninstalling it results in the notifications being visible.

I'm wondering if anyone has thoughts on why this would be happening.

Thanks!

Edit: Just to clarify, this is when using runtime Notice objects.

[LostKobrakai]

I had similar issues, but was never able to track down why this was happening.

[thetuningspoon]

To get around this, I'm trying to use the persistent System Notifications. I like the "annoy" flag, but I need a way to make the notifications disappear after they've been shown once. Otherwise the user will get very confused.

[ryan]

What is the code you are using to send the notifications? Are we talking about JS code, or PHP code? I'm guessing PHP but just double checking. Would be good to see it in context. 

[LostKobrakai]

https://github.com/ryancramerdesign/ProcessWire/issues/1166 Some more information I'd posted on Github. The notices just seem to not survive the session redirect, but in a kinda random fashion. 

[thetuningspoon]

Short on time right now, but to answer your question, Ryan, I am just calling $this->message('message') for each message, the old fashioned way.