Hashtag searches for posts do not show all posts with certain hashtags

I tag a lot of my posts with mostly what I wear and past few days I’ve noticed my posts with #pantyhose will only show the last couple posts I tagged, but in the past it would show everything. I’m postive this is a bug because certain other hashtags will show everything. I’ve tried clearing the broswer cache, checked all my settings, but nothing seems to fix it. Maybe it’s worth looking into as other hashtags might be affected.