Input box at the bottom doesn't work on Safari

The input box at the bottom doesn't work to enter text in under safari. Tested safari with a cleared cache and hard refresh against a firefox fork (zen). The latter worked fine while safari does nothing when pressing enter. Did not have this issue previously up until a month or two ago.

Opening up inspect element shows this error
`TypeError: undefined is not an object (evaluating 'exec[0][0]')`
on tryapl.js:105 `while(exec[0][0]=="\t" || ContinuesPrev(exec.join``)){`
and 117 `log(expr = collectExec().join("\n"))`