New translation system - translations never displayed

[arivei]

Hey,

I'm trying to use the new translation system on PS 8.1. The only way I got it working ever is using array with $this->l in module and hardcoding values, but that does not seem reasonable, so I tried the new one.

I am using for example this in my forms extending TranslatorAwareType:

'label' => $this->trans('External reference', TranslationDomain::TRANSLATION_DOMAIN_ADMIN)

Controller:

$this->addFlash('success', $this->trans('Entity delete was successfull', TranslationDomain::TRANSLATION_DOMAIN_ADMIN));

(I also tried hardcoding the domain string. In twig I use hardcoded strings, as Presta would not scan variables).

{{ 'Entity'|trans({}, 'Modules.Mymodule.Admin') }}

Domain is: Modules.Mymodule.Admin

The problem is that I can see the translations in admin, I can seemingly translate to another languages.

Steps:

• Translate in admin -> module translations
• Delete cache in back office, several times
• Delete cache manually
• Verify that translation is saved (load module trans again)
• ... Delete cache like hundred times, switch browser to ensure no browser cache is used
• Strings are shown in english only

 

Yet the only thing I can see is english. Other strings, like menu etc, is in correct language - the context is correct. 

public function isUsingNewTranslationSystem() { return true; }

How do I correctly translate forms and twigs? The way from docs does not work.