Missing Columns in CSV export of a sketch

[sa3eed3ed]

Describe the bug Missing Columns in CSV export of a sketch, when exporting a timeline, which leads to missing some of the important info.

To Reproduce Steps to reproduce the behavior:

1. in a timeline, click export as CSV

Expected behavior expecting to get exact match to the fields of every entry in the CSV file, specially that they are all the same, even if different data fields, the missing ones should be filled with NANs