Several users reported translations are not honored in the WooCommerce Admin pages, while they appear correctly in the menu.
Thread in the .org repo:
https://wordpress.org/support/topic/translation-is-not-accepted/
I was able to reproduce this on an older version of WordPress (unfortunately I clicked upgrade before noting which version) -- but things seem to be loading correctly for me with 5.2.1 with the latest translations pulled down.

From some debugging, it looks like $relative was returning false for me before (https://core.trac.wordpress.org/browser/trunk/src/wp-includes/l10n.php?rev=45254#L981), which prevented the .json files from loading. On 5.2.1, this is no longer occurring. From trac, it seems like there have been fixes around this in the last few months.
I've asked for some version information on the .org thread, but i think we can close.
From the feedback in the forum thread, this still appears to be a problem for a few users, so I'm going to reopen this and drop it back in the sprint backlog.
Another thread since 0.14.0 was released https://wordpress.org/support/topic/translation-not-working-77/#post-11679623
I wonder if poEdit might be missing the php file in the languages folder.
I translated a string in my dev install that was used in both PHP & script. Confirming that translations in PHP are working but not working with script.
Edit to add: in WP 5.2.2.
I don't believe there is any bug here, just some missing documentation.
Just to double check that, follow these steps to verify:
It's still not working for me. I translated Orders as Canadians:

I don't believe there is any bug here, just some missing documentation.
Agreed. Okay to close.
Not sure if this is the same issue, but I'm seeing translations not working now.

That is Brazilian Portuguese on my local test site, and a user is experiencing the same issue in this forum thread. I saw the same strings not being translated thing when I tried German as well. The translations are up to date, and LT says WC is 100% translated for both languages. I'm using the 2020 theme.
EDIT: While this screenshot shows many other plugins enabled, I also tried this in troubleshooting mode using the Health Check plugin with only WC enabled and saw the same issue.
Another thread about this here.
I'm experiencing the same issue
I'm also experiencing the same issue
I'm also experiencing the same issue
Hi, I'm experiencing the same issue with Italian translations
Just to check with others, did this issue works for someone?
I have 2 differente store and both of them lost all translations after this update.
Even the few ones that used to work.
Hello @Frisoni,
This issue should have been resolved with version 1.4.0 of WooCommerce Admin, which is included in WooCommerce 4.4.
Are you experiencing the same problem on the latest version?
Hi @jeffstieler ,
I was watching this issue since before version 4.4.
I had the same problem as @apmwebdev screenshot ( https://user-images.githubusercontent.com/30607075/86847546-1cc99880-c072-11ea-87f9-79dad06aef31.png ). Note that Inbox and some translations were correct, but most translations in JS files wasn't.
Since 4.4 update, all string are in english. Check my screenshot (now in 4.5)

I did create a fresh install of WooCommerce in 4.4 and it was all in english.
Really don't know whats going on.
@Frisoni - have you gone to the WordPress Updates page ( /wp-admin/update-core.php ) and clicked on "Atualizar tradu莽玫es" at the bottom? After doing so on my local install, I see the strings get translated.
I'll do another check on a fresh install to be sure.
@Frisoni - there may be an issue with the translations loading for the WooCommerce Admin package included in WooCommerce core. If you aren't using the separate WooCommerce Admin plugin, can you try installing that and updating translations?
Thanks!
@jeffstieler every translation is update. No translation button is shown.
I just created a new install only of WP, then installed just WooCommerce and translations are in english.
You can login to check, if you wish: https://wordpress-176158-1479291.cloudwaysapps.com/wp-admin/?wtlwp_token=1a86bb54253c03266111764f2dde7b51
@jeffstieler Did some tests here:
When WooCommerce is installed, translation files from woocommerce-admin are NOT downloaded to language/plugins folder.
I installed WooCommerce Admin plugin, and all translation files were downloaded and admin pages translated to portuguese.
Deleted Woo Admin plugin -> everything in english again.
Reupload translation files do language/plugins folder Without Woo Admin plugin and it is still in english.
Maybe this is more of a woocommerce issue.
I found this one that seems to be the problem: https://github.com/woocommerce/woocommerce/issues/26994
Most helpful comment
Not sure if this is the same issue, but I'm seeing translations not working now.

That is Brazilian Portuguese on my local test site, and a user is experiencing the same issue in this forum thread. I saw the same strings not being translated thing when I tried German as well. The translations are up to date, and LT says WC is 100% translated for both languages. I'm using the 2020 theme.
EDIT: While this screenshot shows many other plugins enabled, I also tried this in troubleshooting mode using the Health Check plugin with only WC enabled and saw the same issue.