You're probably right. After reading through https://twitter.com/TwitterSupport/ https://twitter.com/TwitterSupport/ it looks like Twitter has been disabling so

You're probably right. After reading through https://twitter.com/TwitterSupport/ https://twitter.com/TwitterSupport/ it looks like Twitter has been disabling some features. And according to https://twitter.com/louanben/status/1283518716118958080/photo/1 https://twitter.com/louanben/status/1283518716118958080/phot... the @TwitterSupport account was also affected. I doubt they use a system like HootSuite for that account.