3rd party payment gateways not visible in adminhtml anymore on 2.1.3

[danteay]

Preconditions

1. Fresh install of Magento 2.1.3 with tar.gz package
2. 3rd Party payment gateway compatible Magento 2.1.2
3. PHP 7.0.10

Steps to reproduce

1. Put 3rd Party gateway code inside of app/code folder (for example https://github.com/compropago/plugin-magento-2)
2. run bin/magento setup:upgrade
3. run bin/magento setup:di:compile
4. run bin/magento cache:flush
5. run bin/magento indexer:reindex

Expected result

1. Show gateway config in Stores -> Configuration -> Sales -> Payment Methods

Actual result

1. dont display the config in admin panel
   

In the compile and upgrade comand it works, an the observers works to, but the config dosn't show in the panel in any moment

[petterkj]

I would say wtf.. A really critical bug. Can reproduce. We use https://github.com/DIBS-Payment-Services/magento2-dibs-flexwin but it doesn't show anymore.

[hostep]

Yesterday I read this blogpost: https://www.maxpronko.com/blog/magento-2-1-3-payment-changes-overview-and-recommendations

@mcspronko mentions the payment gateways have to add the <can_checkout>1</can_checkout> xml node to their config.xml file. I'm not entirely sure if this has consequences for not displaying the payment methods in the adminhtml itself though?

The strange thing is that Magento introduced this in a bugfix release, which shouldn't contain backwards incompatible changes, but oh well, it happens all the time unfortunately...
Also this change hasn't been documented in the neither the release notes or in the backwards incompatible changes page, @xcomSteveJohnson ?

[petterkj]

I think here is a hint to fix this. sortOrder seems to conflict this. See https://github.com/DIBS-Payment-Services/magento2-dibs-flexwin/issues/15#issuecomment-268223025 . Fix would be to not make sortOrder decide whenever to ignore other payment methods -if thats the issue here.

[snez]

I confirm that as @petterkj mentioned, adjusting the sortOrder field will fix this. For users of the Stripe Payments & Subscriptions module, the solution is now documented here.

[vkublytskyi]

@danteay, thank you for reporting this issue. We confirmed it in 2.1.3 release and develop branch. Internal ticket MAGETWO-62667 is created to address this issue. We understand that such bug is critical and we will take measures to avoid such issues in future.

As reported by @petterkj and @snez, for now, third party payment method configuration would be displayed in admin panel only if group sortOrder specified in etc/adminhtml/system.xml file is greater than 4.

[danteay]

Tank you @vkublytskyi I try this to fix this error, and I hope that this issue is resolved soon.