Fixed in 1.2.1:
- "Worklog Time Spent" field changes visible on History/All tabs of Issue View screen (JFSSUP-9);
- Issue Edit/Transition screen broken if it contains hidden field and has tabs (only in JIRA 4.2.x);
Improvements in 1.2.1:
- Added support for Jira Timesheet Report and Portlet Plugin (https://plugins.atlassian.com/plugin/details/294) (JFSSUP-10).