It would be good if there was a toggle for the special input box for writing functions. The syntax highlighting and correction can be useful, but it is unusable on most android devices. There has obviously been a lot of effort to make the flow interface usable on a touch screen, but the inability to write functions means that was done in vain.
The helpful input box does not interact well will SwiftKey nor GBoard, the two most used Android keyboards, so the ability to turn this helpful behaviour off entirely would be great.
It would be even better there was a selection of options, such as leaving syntax highlighting on, but turn off any corrective actions, but switching to a raw input would work.