[Closed] Bug: Translations randomly stuck in “In progress” state and do not appear on frontend

Background of the issue:
I am trying to translate French articles (default language) into English using ATE. The translator completes the translation, clicks 'Save to Translation Memory' and 'Done,' then returns to the admin and updates the page. Link to a page where the issue can be seen: [URL not provided].

Symptoms:
Translations do not always appear on the frontend. In WPML > Translation Management, the translation often remains stuck in 'In progress' status for hours or days — even after saving. Eventually, it changes status on its own and appears, without any action from us. The gear icon (⚙️) shows instead of the pencil in the language box, even if the translation is 100% complete in ATE. The frontend remains stuck on an outdated version, and then — randomly — the correct translation appears later. Cache was cleared and disabled during tests. The issue persists.

Questions:
Why do translations remain stuck in 'In progress' status for hours or days?
Why does the frontend display an outdated version even after completing the translation process in ATE?