# Ember-this-fallback 弃用在弃用处理程序中导致崩溃

**URL:** https://meta.discourse.org/t/ember-this-fallback-deprecations-crash-in-the-deprecation-handler/401927
**Category:** Bug
**Tags:** fixed
**Created:** [2026年四月30日 14:20 UTC](https://meta.discourse.org/t/ember-this-fallback-deprecations-crash-in-the-deprecation-handler/401927 "2026-04-30T14:20:18Z")
**Posts on this page:** 1
**Showing post:** 3

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### Author: ![david](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/david/32/157490_2.png) [@david](https://meta.discourse.org/u/david)
#### Post date: [2026年四月30日 14:53 UTC](https://meta.discourse.org/t/ember-this-fallback-deprecations-crash-in-the-deprecation-handler/401927/3 "2026-04-30T14:53:58Z")

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> <https://github.com/discourse/discourse/pull/39662>
>
> These were previously included in requirejs modules transitively, via the \`disco…urse-plugins\` addon. That was removed in b27530cdb100c0b8c913ce37643db6613b0a3c08.
> 
> This commit adds the minimum required modules as vendored shims, and adds a simple system spec to prevent future regressions of hbs/this-fallback functionality.

也将向后移植到 2026.4

编辑：现已合并

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