missing escape key on touch bar
I'm using a MacBook Pro 13". Normally there is an escape key on the left of the touch bar at all times except when an app's functions cover it (only the type that have arrows). Recently the escape button has disappeared completely even for apps that I previously used it for a lot (e.g. minimising a video on chrome). The only ways I can find to even have an escape key are inconvenient for me. 1 replace capslock or 2 constantly have the touch bar expanded and not have any app-based features.
If anyone knows what happened to it (e.g. I accidentally changed a setting or apple did an update that removes it) and how to get it back to normal it would be much appreciated if they could enlighten me on this knowledge.
MacBook Pro 13", macOS 10.15