Custom Button sometimes requires multiple clicks

The action being performed by the button is an update to a Status field I have on UD100 which sets value equal “Sent” and then I have BPMs being executed that sends an email based on the value being equal to “Sent”.

This button works on one click when I use the standard “OnClick_toolSave” icon. However, we started having issues with dups at the end of August with the 2024.1.10 upgrade at Save. This is documented in another post - UD100 table duplicating records sporadically since 2024.1.10 upgrade - #8 by dgross

As a work around I implemented a custom Save button which resolved the dup issue but is now causing the multiple clicks on my Send button.

The custom Save button is replicating the OnClick_toolSave so not sure what I am missing. I noticed this morning that if I click the custom Save button and then click on another field on the form prior to clicking the Send button - the Send button only requires one click.