M2M relationship field bugged (blank) when adding existing item, but fixed on save.

[StephenGunn]

Preflight Checklist

• I have completed all Troubleshooting Steps.
• I'm on the latest version of Directus.
• There's no other issue that already describes my problem.

Describe the Bug

This bug happened after upgrading from 9.3 -> 9.4.x, it used to work on 9.3. On a M2M relationship, adding an existing item shows a blank item in the field. After saving, the item is correctly displayed.

Field before adding item:

Field after adding existing item:

Field after saving (properly displayed):

I have tried redefining the Display Template but the error persists.

I asked a few times in the Discord if anyone else saw this error, finally had someone else confirm this bug. I haven't seen any other posts about it so I thought I would try creating a report.

To Reproduce

• Create a M2M relationship on 9.4.x and use a field from the related item in the display template.
• Use the 'add existing' button to add an item, the field will be bugged until save

Errors Shown

There are no bugs shown in the browser console or the Directus server logs.

There also isn't a request shown in the Directus server logs on item select. Not sure if a request should be firing or not.

What version of Directus are you using?

9.4.2

What version of Node.js are you using?

v16.13.0

What database are you using?

Postgres 12

What browser are you using?

Chrome / Firefox

What operating system are you using?

Windows 10

How are you deploying Directus?

Self install on Digital Ocean droplet with a managed DB instance

[HitomiTenshi]

I can confirm this bug happens on simple M2M fields even without deeply nested display configuration, but only when using "Add existing"!

Related to #10647

When using "Add new" on simple M2M fields, the newly added entry displays fine. When using nested (at least 2 relations deep) fields in the display config they will not display even when using "Add new", see issue #10647.

[koksikus]

Hi,
What is the cost of this visual fix? or when will it happen?
It would be good to have it. That's why I stopped updating directus...

[benhaynes]

@koksikus You can reach out to our Support Team via our website's Live Chat to get pricing on this. 👍

[vtugulbaev]

Hi!
I got a similar problem with M2M when linking to files (directus_files). In my case, the application completely crashes due to an unhandled exception.

@benhaynes, i have fixed this error. I can make a pull request. Or how should I post a fix? I'm new to open source =)

[benhaynes]

@vtugulbaev — thank you!! @rijkvanzanten can confirm, but here are our Docs on PRs: https://docs.directus.io/contributing/introduction/#submitting-a-pull-request

[DavidPLamas]

This issue is still happening in version 9.5.1.
I see that the PR opened by @vtugulbaev hasn't gotten any feedback yet, are there any predictions on when this will be tackled?

[jamescammarano]

Unfortunately, we can not provide estimates on features or fixes. We recognize that this may be an important feature/fix, but we are a small open-source organization with a lot to triage and complete.

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This is an automated response.

[abdonrd]

Following this issue, since I also suffer from it.

And thanks @vtugulbaev for the PR!

[ClementRocket]

Really loooking forward for a solution to this problem. Thanks a lot @vtugulbaev for the PR, I hope it's accepted soon. Thank you guys.