Filtering not working when any column name has a period (e.g., 'col.3')

[rickhg12hs]

I'd like to preserve the given column names, but if even just one of them contains a period ('.'), the filtering function no longer works. There is no reported error, just no filtering happens.

Modifying a table from previous issue #7534 demonstrates the problem. Note the last column col.3. Filtering doesn't work for any column.

table=TableDisplay(pd.DataFrame(data=[[4.0,'Hello',1.0],
                                      [2.9,'World',3.2]],
                                columns=['col1try','col2','col.3']))
table