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How to set the width of a Client Side Extension column?

Johannes Heger July 17, 2022


I'm updating a Bitbucket add-on to Bitbucket 8 and I'm using Client Side Extensions CSE the first time. I need a custom-column in pull-requests and can achieve this with the following code:

import {ButtonExtension} from '@atlassian/clientside-extensions';

* @clientside-extension
* @extension-point bitbucket.ui.pullrequest.commits.table.column.after
export default ButtonExtension.factory((pluginApi, context) => {
// Visiblity depends per row, but for demo is always disabled.
const isHidden = true;

return {
hidden: isHidden,
header: 'My Header',
iconBefore: 'page',
label: 'My Label',
className: 'my-class',
onAction: () => {

This works, but the column is unexpectedly wide, it has a (implicit) width of 320px. I like to have the width set to 80px. Until now I haven't found any way to configure this statically in the CSE code or any CSS.

More background:

CSE renders the column always, but only if isHidden is false a DIV inside the TD is created. The className is set only to that DIV, but not for the empty TD nor the header TH, so creating a CSS like the following doesn't work:

/* Doesn't work: */
.my-class {
width: 80px;

I can use a MutationObserver, but this results in a flicker.

My questions are:

  1. How to set the width of a CSE-column statically?
  2. Ans aside from that: Can I hide/show the CSE-column itself dynamically?

Kind regards,


1 answer

0 votes
Christian Glockner
Atlassian Team
Atlassian Team members are employees working across the company in a wide variety of roles.
July 17, 2022

Hi Johannes,

Considering the nature of your question you may find someone who can help in our Developer Community at



Premier Support Engineer


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