Rules are not invoked on fields updated by Blob Control widget

I was trying to create Blob Control widget and a rule which will take a FileCreated column value (value is filled after uploading file) and update different column with Simple data rule.

I was expecting it will work as usually.

Instead the rule is not invoked.

After uploading a file via form, the columns FileSize, FileCreated, FileLastModified are automatically updated via the widget. The dependency column is FileCreated, but the rule processing is not initiated.
If I use different dependency column the rule is initiated correctly and the rule is processed only if there are not used specific EXSLT functions in the value rule. If so, similar bug is shown as in EXSLT error : XPath exception - Extension function not found: parse-date - bugs - ORIGAM Community

I can confirm this behaviour and we consider it as a missing feature. Estimation is 1-4 hrs for implementation.

@washi from my point of view it is a bug. If it is expected behavior it should be mentioned somewhere in Origam documentation that such a limitations in Datastructure Rule Set exist.