Can't delete a block in Safari

[LIsa]

OS: X El Capitan
Browser: Safari 9
Mahara: 16.10

Not able to delete a block/content created from Page editor when delete button is click

Test step:
1. Log on as User
2. From Profile>Page
3. Click Edit on existing Page
4. Click on a content from the side panel>Block is added on the page
5. Edit and Delete button is displayed from the block
6. Click Delete

Result: Block is not deleted

[LIsa (lisadunmire)]

Tested in Safari 9 for 16.04 and 15.10 release.
Block can not be deleted (but can be updated).

Block can be updated and deleted for other browser with same release as above (16.04 and 15.10).

[Cecilia Vela Gurovic (ceciliavg)]

Tested in MacOS Sierra with safari 10 and could not replicate.

The issue could be related to javascript confirm() function not displaying the dialog window to confirm an action. Instead, calling confirm() would return 'false' everytime.

[Niranjan (niranjan528)]

Tested this on safari latest version and couldnt replicate it. This problem was reported while testing on sauce labs but when tested with real device couldnt replicate it. So closing this bug.