SearchPanes - Feedback and Requests

Hi,

Loving the new release, brings in some excellent new features. A couple of things I've noticed:

1. columns-6
   Still using the beta searchpane on a specific table as we have 9 selection boxes across the top. Having it flow to 2 rows in the searchpane takes up too much space. Any chance this can be expanded?

2. columns-4 to 6
   Using the standard UI, when I increase above 3 columns the pane controls drop to a second line as it seems the search box takes up the entire top row, which leads to point 3.

3. pane controls
   Can we have an option to remove the search as well as order, just leaving the 'x' to clear?

4. A bug
   I have a table with an external date selector, that modifies the ajax url, eg ajax_data.php?date=2020-02-28
   Works without issue until someone selects 2 dates that have no data. It then throws this error in the console and stops working until the page is refreshed:
   Uncaught TypeError: Cannot read property 'scrollTop' of undefined
   at f._updateCommon (datatables-1.10.20.min.js:452)
   at f.updatePane (datatables-1.10.20.min.js:426)
   at b.redrawPanes (datatables-1.10.20.min.js:464)
   at HTMLTableElement.<anonymous> (datatables-1.10.20.min.js:472)
   at HTMLTableElement.dispatch (jquery-3.4.1.min.js:2)
   at HTMLTableElement.v.handle (jquery-3.4.1.min.js:2)
   at Object.trigger (jquery-3.4.1.min.js:2)
   at HTMLTableElement.<anonymous> (jquery-3.4.1.min.js:2)
   at Function.each (jquery-3.4.1.min.js:2)
   at k.fn.init.each (jquery-3.4.1.min.js:2)

You can select a date with no data once, back to data, etc without issue. Only occurs when you hit zero data twice in a row. Haven't tested outside of this single table/data source. Below is the code once the ajax is updated to reload, rebuild and adjust column width:
dt.ajax.url('ajax.php?date='+data).load( function() { dt.searchPanes.rebuildPane(); dt.columns.adjust().draw(); } );