keikai closes inline editor when switching to another not-loaded sheet

Steps to Reproduce

1. load the attached file with 2 sheets
2. enter =1+ at A1
3. select Sheet2

Current Result

the inline editor closed

Expected Result

• the inline editor is still open
• when a user selects a cell in Sheet 2, keikai fills the selected cell address like:
  

Debug Information

1. if you do the same steps 2nd time, the bug doesn't happen. Since the Sheet2 is cached now.
2. when selecting the 2nd sheet, keikai invalidates and re-renders itself which causes to close the inline editor. Caused by the fix for KEIKAI-283

Workaround