SOLVED Was a css issue
Browser: Chrome 110
OS: Android and Iphone
URL: Dev site so not available
Bricks Version: 1.9.8
I am using Store Locator plugin
Wordpress depository …/plugins/wp-store-locator/
It works fine on Desktop and tablet but has an issue on mobile (phone only).
It is fine on desktop with browser at mobile width.
Issue is two of the fields are missing content.
Screenshot shows what it should look like on mobile phone (screenshot is from desktop at mobile width) and below it what it actually looks like on mobile phone

I changed theme to Twenty Twenty-Three theme and it works as it should so the issue is definitely with Bricks.
I also tried adding the shortcode to gutenberg and same issue.
I have talked to the plugin support and this is what they say. They suggested I check with Bricks support.
"
it happens because, somehow, the HTML output of the dropdowns is different to what is expected, but I really don’t know why this is happening.
This is what the HTML output of the area that prints the dropdowns should look like. Notice the element that does contain the selected value:
*[Screenshot of html code from email: what it should look like and what is missing]

So let me ask you, are you using by chance a custom template?
"
Any help or advice appreciated.
Thanks
Paul