Not able to select an existing connection (or add a function to an existing connection)

[stiglyt]

Describe the Bug with repro steps

In the Data Mapper designer, I'm not able to select a connection between a source and a target. I'm also not able to add a Function via the + sign that should appear when hovering over an existing connection. Normally you get a hand cursor when hovering over a connection, but I get the regular arrow cursor instead.

I've tested different versions of the extension, and the last working version is 4.31.7. I've tried both the newest version from VSCode (4.57.7) and the newest version from releases in this repo (4.83.0) and none of them works.

Adding videos for non-working and working scenarios.

Screenshots or Videos

Not working

https://github.com/user-attachments/assets/f98c2a15-2b2e-4438-82e4-944d6fe2049c

Working

https://github.com/user-attachments/assets/d781e2d5-2041-434f-96e9-8dd06383755d

Version

4.57.7

Additional context

No response