UI Bug: Variable Picker Menu for Expressions is not appearing

Hello,
I’m experiencing a critical UI bug in my n8n.cloud instance. The variable picker dropdown menu (the one that shows Credentials, Nodes, Globals, etc.) does not appear when I click inside any expression field.
This makes it impossible to link credentials or data from other nodes via the UI.
I have already performed extensive troubleshooting to confirm this is not a local issue:
The problem occurs in all my workflows, including a brand new, empty one.
I have tried a hard refresh of the browser (Ctrl+Shift+R).
I have tried logging out and logging back in completely.
The issue persists when using an Incognito/Private browser window.
The issue also persists in a completely different browser (I have tested both Chrome and Edge).
The problem seems to be specific to my n8n instance, as this core UI feature is not functioning at all. Could you please advise?
Thank you.

hello @Ron_Opdam

Can you provide a screenshot of the issue?

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