I found one way to fix this problem... it may break something else, but initial testing with my data set, I do not see any problems.
I changed the file: DrasticTools/js/drasticGrid.js, line 289
original:
var url = t.options.path+'?op=u&id='+obj.ddsqlid+'&col='+colname+'&value='+encodeURI(value)+t.options.addparams;
to:
var url = t.options.path+'?op=u&id='+obj.ddsqlid+'&col='+colname+'&value='+encodeURIComponent(value)+t.options.addparams;
Reverting to "escape(value)" also appears to work here, but after reading this site:
xkr.us/articles/javascript/encode-c ...
I decided to go with encodeURIComponent(value).
Thanks