Shortly after the issue was raised by some users, Instagram started showing a handful of posts containing the #sikh hashtag.
Instagram seems to have blocked the hashtag #sikh on its platform for a short period of time, some users have complained on Twitter. The blocking comes just over five months after Facebook and Instagram were seen restricting the #sikh hashtag for a number of users. Instagram at that time responded to user complaints and stated that the said hashtag was “mistakenly blocked” in early March.
As per the user reports, the #sikh hashtag isn't searchable on Instagram. Some users have also reported that the blocking is in place on Facebook as well.