Trouble with Insert Edit

This one has me stumped and I'm sure it is PBKAC (person between keyboard and chair). When I go to do an insert edit by dragging a clip from the source window to the Program window Resolve puts the clip at the head of the timeline.
To be clear I position the playhead where I want the insert to take place, I select the clip and give in an in and out point in the source window and then drag it to the insert icon the slides into view on the right side of the program window. And then BAM the clip is inserted at at 0:00. Same thing happens when I use my mouse to select the insert icon above the timeline and drag the clip to the timeline.
As always your help is appreciated and valued.
Nick
To be clear I position the playhead where I want the insert to take place, I select the clip and give in an in and out point in the source window and then drag it to the insert icon the slides into view on the right side of the program window. And then BAM the clip is inserted at at 0:00. Same thing happens when I use my mouse to select the insert icon above the timeline and drag the clip to the timeline.
As always your help is appreciated and valued.
Nick