Here are some details about my project that may be relevant. Some were already cited above, other are my assumptions:
- the issue only happens with blueprints instances which parent class is also a blueprint.
- the entire category of properties loses the values.
- it’s not always the same category.
- when the issue happens, all instances in the level of the same class loses the values of the properties.
- as I said above, I don’t think the issue happens when the editor is started. It happens before, while we are doing… stuff. But, when the editor is restarted, is when we see the damage.
- I am doing a 2D space shooter. It has hundreds of enemies. So, I don’t know if it is relevant, but my level has a lot of actor instances.