Yep it changed apparently. I will just put the dates and attach an explanation letter with my copies of the study + work permits@wonderwall007 Dunno if the PGWP, being "post-graduate", is a specific situation, but no, you usually can have both at the same time.
https://ircc.canada.ca/english/helpcentre/answer.asp?qnum=1618&top=15
It shouldn't be an issue to list the actual dates in your permits, IRCC will figure out the rest.
Also, I may be mistaken, but I remember needing not only the work permits but the dates their applications were sent when I helped some family member with their online application a few months ago. It may have changed since then. Forget it if there is no section for it...
Thank you again @Seym