Error exception is thrown when HOT is within Angular Material Tab which is inactive (not visible).
Demo: https://hot-tab-demo51.stackblitz.io
Note: HOT is in ‘Second’ tab.
Chrome debug console (F12/Console) shows following:
ERROR TypeError: Cannot read property ‘sourceToRendered’ of null
at o.value (handsontable.full.min.js:34)
at o.value (handsontable.full.min.js:34)
at t.value (handsontable.full.min.js:40)
at t.default.getCell (handsontable.full.min.js:34)
at r (handsontable.full.min.js:34)
at eval (handsontable.full.min.js:34)
at eval (handsontable.full.min.js:40)
at n.t.default [as validator] (handsontable.full.min.js:40)
at eval (handsontable.full.min.js:34)
at ZoneDelegate.invokeTask (zone.js:423)