Google Calendar “Update Event” node freezes when clicking “Let the model define this parameter”

[Analyst_BZ]

Describe the problem/error/question

Hi everyone

I’m currently building an MCP Server Workflow in n8n that integrates Google Calendar.
So far, I have successfully created three tools:

1. Create Event

2. Search Available Slots

3. Delete Event

Now I’m adding a fourth tool to update existing meetings using the “Update Event” operation.
However, when I click on “Let the model define this parameter” for the Event ID field (as shown in the image), the whole UI freezes — buttons stop working and I can’t interact with anything until I reload the page.

Has anyone experienced this before or knows what might be causing it?
I’m using this inside an MCP workflow connected to Google Calendar, and everything else works fine.

Any help or suggestions would be greatly appreciated

Information on your n8n setup

• n8n version: 1.115.3
• Database (default: SQLite)
• n8n EXECUTIONS_PROCESS setting (default: own, main)
• Running n8n via (Docker, npm, n8n cloud, desktop app): n8n cloud
• Operating system: Windows

[haimich]

Hey Analyst_BZ,

this is indeed a known problem that has already been reported on n8n’s GitHub page: Google Calendar Tool: UI Freeze When Selecting “Let the Model Define This Parameter” in Update Operation · Issue #20848 · n8n-io/n8n · GitHub

You can click on the “Subscribe” button if you want to get informed on any updates (you need to have a GitHub account for this):

[Analyst_BZ]

Hi @haimich ,

Thank you for your help .

[JeffHerr]

It looks like it’s getting no attention on github. Sure hope someone picks it up soon! It’s unlikely to be more than just a typo, I’d think…

[Jason_Tan]

Hi there, i was facing the same problem too. but i found a way to work around it.
since updating is basically changing the information of the bookings. You can delete the original booking and create a new bookings with your updated details.
hope this helps