Activities cannot be expanded in Studio 23.4.0

[system]

We use Studio 23.4 and are not able to open any activities that we could open before.

Activities are showing up compacted in the project so it is unable to open them in order to make configuration changes to them.

For example, in the screenshot below, the Import Arguments and Open Workflow for the Invoke Workflow File activity cannot be opened:

Root Cause: This can happen starting with Studio 23.4, due to the design vs. runtime dependencies separation, if the project has a runtime dependency installed alongside OR instead of the regular one.

In this example, the project has both the UiPath.System.Activities and the UiPath.System.Activities.Runtime dependency, when only the regular one (UiPath.System.Activities) should be installed.

This can affect all dependencies, not just the System activities, for example:

Resolution: Remove the runtime dependency from the Studio project and install the regular dependency instead (or that only the regular one remains).

Once the runtime dependencies are removed, it becomes possible to open the activities and thus make further changes to them.

Note: It is recommended to take a back-up of the project before performing any changes to them.