Hi please can you look into this. It used to do this up until about 4 months ago and now I always have to reselect the main product images every time I add a photo. If you can solve this issue, I will pay for the store manager for magento standard edition ($249.00) straight away. Thanks.
Mar 21, 2019
Just discovered it stopped working in this one that I installed in September 2018 magento-manager-full-setup-18.104.22.1688-standard.exe.
I have reinstalled magento-manager-full-setup-22.214.171.1249-pro.exe and it works fine. Therefore I will not be able to upgrade to any later storemanager versions unless this problem is fixed.
If you manage to fix it in later versions, please let us know and I will gladly upgrade. Thanks.
Mar 22, 2019
Thanks for your comments.
In our new software versions image is automatically assigned as "base" when you drag-and-drop it.
You are welcome to view video how it works on our latest software version > https://www.screencast.com/t/usobgOobTSI
Versions you have specified ( 2.27 and 2.17) are quite old and do not have this improvement.
You can find below video with representations of drag-and-drop image function work on those versions:
2.27 > https://www.screencast.com/t/PGPFG9fl
2.17 > https://www.screencast.com/t/DJ73d5npc