Occasionally missing "object" field in an animation step

[atilante]

Some JAAL 2.0 recordings related dijkstra-misconceptions have animation steps where the "object" field is missing.

dijkstra-misconceptions/data/2022/raw/5897214.json
Logging of jaal2html:

Warning: animation step does not have field 'object'. Step: {'type': 'click', 'time': 345000, 'currentStep': 2, 'gradable': True}
Warning: animation step does not have field 'object'. Step: {'type': 'click', 'time': 424900, 'currentStep': 2, 'gradable': True}

This is a fascinating mystery.

• Metadata shows that JSAV Exercise Recorder 2.0.0 have been in use. Therefore this data has passed JAAL validation.
• JAAL specification requires an object field for an event if it has a type field with value click. https://github.com/Aalto-LeTech/JAAL/blob/main/spec/schemas/event.json

What to do:

• Validate each raw JAAL in dijkstra-misconceptions with a Python-based JSON schema validator. https://python-jsonschema.readthedocs.io/en/latest/validate/
• Investigate the SVG of the steps where the semantic data is broken.