behaviour with default settings of optional widgets

While implementing my own node with an

@OptionalWidget

setting, I came across the following behavior which is probably not wanted? Instead of putting my own code here I first confirmed the behavior on the implementation of the ‘Row Sampler’ on KNIME 5.8 STS.

By default, the setting

Fix random seed

is enabled and has a default value. Now I do the following:

1. change the value

2. apply the settings

3. disable this setting

4. enable this setting

Now, the random seed is set back to its default value instead of the one I applied. If I change the value again to what I chose before, the

Apply

-Button becomes disabled (as the setting most likely is still set to my custom setting).

Please let me know, if this behavior is wanted and if not how to prevent it. Is there any way to retrieve the current setting from the

computeState

method of the DefaultValueProvider class?