Reproduce:

• goto http://dmn-io.github.io/dmn-js/ using internet explorer (tested with 11, should affect every version)
• click on a table cell

Expected:

• Cursor is in table cell
• I can edit the table cell

Observed:

• I can not edit the table cell
• green selection indicator is set

Problem:

• Internet Explorer does not support the content-editable attribute for table cells https://msdn.microsoft.com/en-us/library/ms533690(v=vs.85).aspx

Proposed Solution:

• Use another element (e.g. a span) inside the table cell and edit this one instead