I have a lightning datatable in my LWC. I have applied column border styling to it, but it's not getting applied only to the 1st row. Rest all rows get the styling. I didn't find any explanation for it. Is this a salesforce bug?

column borders not displaying


<div class={flexipageRegionWidth}>
       <div class="slds-table_bordered slds-table_col-bordered slds-table_striped slds-scrollable" style="height: 20rem">
              <lightning-datatable key-field="Id" data={wrappers} columns={columns}
                        onrowaction={navigateToRecordViewPage} hide-checkbox-column="true">


const columns = [
        label: 'Name',
        type: 'button',
        sortable: 'true',
        typeAttributes: {
            label: {fieldName: 'name'},
            variant: 'base',
    { label: 'Email', fieldName: 'email', type: 'email' },
    { label: 'Phone', fieldName: 'phone', type: 'phone'},
    { label: 'MDM ID', fieldName: 'mdm', type: 'text' },
  • @PranayJaiswal text overflow is not the issue. I updated image in question. Please check. Thanks!
    – Koustubh
    Commented Nov 15, 2019 at 8:31

1 Answer 1


This seems to be a bug related to slds-table_col-bordered. In the lightning-datatable documentation, I could not find any example using this border to be honest.

I replicated the issue on this LWC Playground: https://developer.salesforce.com/docs/component-library/tools/playground/xQ4KLIxJh/27/edit

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