According to my research, I found that they paused processing of 4 types of application which includes Study Permit Application. The pause has been in effect from 9th April until 29th April. Follow the link below to check all the processing changes that has been in effect.
https://www.canada.ca/en/immigration-refugees-citizenship/services/coronavirus-covid19/apply-visit-work-student.html
https://www.canada.ca/en/immigration-refugees-citizenship/services/coronavirus-covid19/apply-visit-work-student.html