I've had a similar problem with objects I've already mapped not being recognized during recording or playback. I can have a text box called "txtName" in my mapping, record a new script and TC adds a whole new window and object. If I right click on txtName and select Highlight, it highlights fine. On playback, I've had 2 toolbars with different indices (1 and 3) get mixed up.
Since I haven't been able to narrow down the exact steps to recreated, not much has been done to address the problem at this point. But I do think it got worse since upgrading to 8.7.
