Swipe to Delete Messages in MacOS26.2

Re:"Swipe to Delete Messages in MacOS26.2 : Swipe to delete messages in MacOS26.2 is not working. When I re-start the application, it works again for a short period of time. Any ideas on how to solve this problem?"

Sometimes methods of working can change a little (or a lot) as MacOS is given new features, or upgraded.

Wondering if Apple Support's online article for MacOS Tahoe 26 (link below) can help:

See: Delete messages and conversations in Messages on Mac - Apple Support

Eg: says:

"Delete messages and attachments

1. Go to the Messages app on your Mac.
2. Select a conversation.
3. Select one or more messages (including text messages, photos, videos, files, web links, audio messages or emoji) in the transcript, press Delete, then click Delete in the dialogue.

Note: When you delete a message, it’s moved to the Recently Deleted folder on your device, but not anyone else’s. When you want to delete a message for everyone, use Undo Send within 2 minutes of sending it."

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Seems the only swipe action now is in the sidebar when you delete a single conversation:

(see the "Tip" below for the details:)

Eg: Above article also says:

"Delete a conversation

1. Go to the Messages app on your Mac.
2. Search for a conversation.
3. Delete any of the following:

• A single conversation: Select a conversation, Control-click, then choose Delete.
  • Tip: If you have a trackpad or a Magic Mouse, swipe left with two fingers on the conversation in the sidebar, then click .
  • An empty conversation: Move the pointer over an empty conversation, then click .
  • Several conversations at the same time: Select the conversations in the sidebar, Control-click, then choose Delete."

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Resource: Messages User Guide for Mac - Apple Support