Reading Saved Files: File + Save Data widget

[ajdapretnar]

Orange version

3.11.dev

Expected behavior

Orange reads the data, that were saved with Save Data widget.

Actual behavior

In some exotic cases, Orange's File widget is able to read the data, but once the data is saved with Save Data widget and reloading in another File, File widget cannot read it ("too many indices for array")

Steps to reproduce the behavior

Originally, loaded a .csv file with File, used Feature Constructor (after which the data was saved and loaded normally) and Select Columns. Saved with Save Data. After Select Columns, File widget wasn't able to load the data from .tab.

Additional info (worksheets, data, screenshots, ...)

Provided is a minimum working/not-working example.
reading-bug.tab.zip

Important.
Read the file. Error occurs.
Open the file in text editor. Remove the first line (have only two instances in the file). No error.
Go back to the original file. Remove the last line (strange line with tabs before triple quotes). No error.