After updating to a later version of Transact Maestro, it is possible that your browser has cached a previous version of Transact Maestro and this can lead to unpredictable behavior when building applications in Maestro. To address this issue, it is strongly recommended that all users of Maestro clear their browser cache after upgrading to a later version of Transact Maestro.
Use the following instructions to clear your browser's cache.
Chrome Browser Settings
If this fails in Chrome then a deep clear of the cache will be required.
In the Browser Privacy screen, click Clear your recent history.
On the next screen, ensure cache is selected.