This issue is due to a Chrome browser update that affects nearly all versions of dbFront. As you likely know, Edge is now a variant of Google's Chrome.
This issue also affects the position of the gear icons, lookup dropdowns and other items.
The latest Feature release of dbFront 1.2.2.2792 already contains the fix to this browser change.
I have also released a patch version of 1.1.5.6687 to fix this same issue. The changes to dbFront are trivial and safe.
All that is required is a small addition to the base CSS file. You can update the file ccs/Site.css and add the following three lines.
div.detailFields div.value {
position: relative; /* Fixes gear, lookup and notification positioning */
}