Solved
AEM 6.3 Classic UI sidekick invisible after switching from Touch UI
Steps to reproduce:
- open any test page in Classic UI which has sidekick, validate sidekick appears
- open the same page in Touch UI
- again open the same page in Classic UI, now the sidekick disappears
This is reproducible in vanilla Jboss author instance also.
FYI, Every time business has to clear cache to see sidekick while switching UI. this issue follows from AEM 6.1