Steps to Reproduce

1. run the attached zul
2. click the cell "unhide" to show hidden rows (1 ~5)

Current Result

• A1:I1 looks like not merged
• editbox only inside A1
  
  
  

Expected Result

• A1:I1 should be merged
• editbox should as wide as the whole merged cell

Root cause

ZSS doesn't update a merged cell width when unhiding a row. Since the original implementation only consider the height changes.

Solution

update width when unhiding a row and update height when unhiding a column because both width and height might change.