Connecting Parameter with Probe acts differently depending on situation

[wvangeit]

Is there an existing issue for this?

• I have searched the existing issues

Which deploy/s?

production aws (e.g. osparc.io)

Current Behavior

I noticed that when one has a study with just one number parameter connected to one number probe, the 'run' button acts differently if one opens the study right after opening the osparc.io website (also happens on my local deployment) as opposed to opening the study for a second time.
When opening for the first time, the study's run button is enabled (I assume it's not supposed to be):

Screen.Recording.2025-07-07.at.14.18.52.mov

However, the second time opening the same study, the run button is greyed out:

Screen.Recording.2025-07-07.at.14.20.03.mov

Expected Behavior

Consistent behavior between opening a study first / consecutive time.

Steps To Reproduce

Create a study with just a number parameter connected to a number probe.
Close study and website
Open website again
First time opening study -> run button enabled
Second/consecutive time -> run button disabled

Anything else?

Macos 15.5 Firefox 140.0.2