TreeView Control Not working properly in 64bit version of Microsoft Office

If the Aucotec Treeview control is included in the multipage control, it is not possible to switch the page2 tab with a single click of Page2 in the 64-Bit version of Microsoft Office. But I had no problems with the 32-Bit version.

Workaround Options:
1. The Page2 tab will appear if I click it twice. (This is not a good approach).
2. If the Aucotec Treeview control is outside the multipage control, Page 2 will show up in the user interface with a single click. (This is also not a good approach.)

please give any suggestion need to switch the page2 tab with a single click of Page2 in 64bit. And also, I have attached snap for reference