I am closing the ticket due to lack of response.
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Since this is not a generic issue that we can reproduce at our end, we will need someone to look into your machine to figure out what is going on here.
An error occurred while saving the commentKAT-O commented
Adding Guides are still a very hit and miss exercise! Sometimes they are placed, mostly they are not, especially at high Zoom nothing happens when dragging a Guide from the Rulers! Also, at 100% everything looks fine but when magnified the shapes are not snapped together exactly. When they are accurately aligned, and then rotated, or moved they become misaligned. Such a cumbersome and inaccurate Drawing programme.