Upload Icons Disappearing

We have a client using the Photo Gallery extension for Joomla, and every time they try to click the upload icon to choose a method of uploading, they all disappear. When I try to click on the icons myself, it works sometimes but if I don't instantly release the LMB while clicking, they all disappear. Here is a Screenshot to show which icons I am referring to. Please let me know if there is any way to fix this.

Thanks,
Shane

Sometime I have the same issue.
I have to reload the page.

Hello,
Thank you for contacting us

Most likely the problem is related to browser extensions,
try disabling them or check in another browser

Best Regards,
Vyacheslav, Balbooa Support Team