Running pgAdmin4 version 4.8 on Chromium under Kubuntu. When I open the properties dialog for a table, it is un-resizable and the horizontal scroll bar doesn't work. This is particularly problematic as I can't get to all the properties in the columns screen.
The table properties dialog is working fine for me on Chromium on MacOS. All the properties of the column can be accessed by expanding the row with the Edit icon (Left side) given for each row in the Columns Grid.
I would suggest, try a different browser as well as Chromium is not the supported browser for pgAdmin.
The developer's tool in Chromium shows these errors/warnings:
3 Unchecked runtime.lastError: Could not establish connection. Receiving end does not exist.
vendor.js:93 exported wcDocker vendor.js:155 sprintf() will be removed in the next major release, use the sprintf-js package instead. n @ vendor.js:155 :34105/static/js/generated/app.bundle.js?ver=40800:18 Uncaught TypeError: Cannot read property 'chart_obj' of undefined at Object.<anonymous> (:34105/static/js/generated/app.bundle.js?ver=40800:18) at l (vendor.js:39) at Object.fireWith [as resolveWith] (vendor.js:39) at u (vendor.js:39) at XMLHttpRequest.<anonymous> (vendor.js:39) vendor.js?ver=40800:39 [Deprecation] Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user's experience. For more help, check https://xhr.spec.whatwg.org/.