Sorting Icon Doesnt Display
You mean the asc/desc arrow in the column headers? It looks like it displays for me. Which version of material-ui and mui-datatables are you using?
Yes exactly those Icons
Below are my details:
Material Ui- 4.10.0
/icons - 3.0.2
/pickers - 3.2.6
Mui-datatables - ^3.0.0
Looks like they appear for me in this codesandbox with those versions: https://codesandbox.io/s/muidatatables-custom-toolbar-zk0t3?file=/index.js
Are you using any special customHeaderRender functions? What browser are you using?
No I am not using any customHeadRenderer, I am on Chrome Browser and IE11
Is it possible? If the number of columns are more in number with minWidth and maxWidth would result into this??
Does the codesandbox above work for you?
I have a feeling this could just be a style override somewhere. I vaguely remember encountering this, however, if I can't recreate it, it's going to be hard to debug. If you inspect the header element of your cells, do you see an element with a class of "MUIDataTableHeadCell-sortAction-[number]"? And for the currently sorted column, is there any svg element inside of this div?
Yes the sandbox work fine...
And I did saw the mentioned class and associated svg in inspect element, but it doesnt appear on header cell
Can u give the clue on what might have been overridden here which makes the icon to disappear!!?
So if you click on a column to sort it, and then you inspect the column, you see an svg like this, correct?

If so, I would look at the styles placed on the element to see if anything is overriding it from being visible. Basically compare the "Styles" in your console sidebar to the "Styles" in console for the codesanbox example.
I found it, the color of svg is white color hence was not visible... thanks for this Patrick, I resolved using the nesting implantation as override
MUIDataTableHeadCell:{
root:{
“& .MUITableSortLabel-icon”: {
color: “black”
}
}
}
No prob, glad to hear it's fixed :)
Most helpful comment
I found it, the color of svg is white color hence was not visible... thanks for this Patrick, I resolved using the nesting implantation as override
MUIDataTableHeadCell:{ root:{ “& .MUITableSortLabel-icon”: { color: “black” } } }