Fixed elements in specs cover
At this moments fixed elements need to be positioned at the exact position in which we want them to be fixed, on top of all other elements on the scrollable artboard. In design mode we can hide fixed elements and work on stuff that lays underneath, but, in specs view, fixed elements appear on top of all other elements and there is no way for developers to access information of the elements positioned under the fixed element.
The obvious example is the mobile phone bottom bar, as from the attached screenshot.
Solutions may vary, from possibility to hide/show elements in specs view to the possibility to position elements also relatively to the viewport (bottom, top, left, center ...) regardless of their position on the artboard.
It is common for mobile designs to have a bottom fixed navigation. However when the navigation layer is set to "Fix position when scrolling" - any layers in the body which happen to be at the bottom of the viewport get hidden by the fixed layer.
This creates a big problem when we have to:
1. Export the designs as PNGs for internal reviews
2. Export to extensions like Overflow.
3. Export design specs.
Because in all the above cases there is no way for us to clearly see the layers beneath the fixed layers.
As a result the stakeholder/programmers get frustrated in working with these designs.
Example: In the attached "01 Current State... .png", the bottom nav can be seen hiding the graph layer. As a result, the stakeholders reviewing the PNG will not be able to see the graph information. Tools like Overflow will render the design with the graph hidden and no way for users to see its data. And finally the coders will have no idea how to code the graph layer in the design specs link.
Shift the fixed element to the bottom of the screen, where we anyway keep an empty margin, so that the fixed elements don't hide any critical elements.
For example, in the attached image "02 Ideal state... .png", the fixed nav bar is shifted to the bottom of the screen so that it does not obstruct any view of the elements in the body. As a result we can clearly see the graph layer without any obstruction.
Amin Khadmi commented
Fixed element should be floating or moveable in design specs, because it's appearing at top of other elements in design specs and developer are not able to check/see properties of those elements.
The fact that this feature has so little upvotes means that people have still never used XD for making design specs of a live project. :-(
We don't have any way to let developers see elements hidden behind fixed-elements in the specs. This happens in case of both specs exported within XD or on Zeplin.
Also the fixed elements feature is a pain when you want to export png of designs to share with the product team. Again the fixed elements hide everything behind them, and so the designers have to move every fixed element at the bottom of the screen and then do the export. Not fun when you have fixed elements on 50 artboards.
XD should have simply designed the fixed element feature as in Invision. Place them at the bottom of the screen so that they don't interfere with the body of the design, while rendering perfectly in prototype mode.
In XD we are forced to maintain two files for the same project. One for prototyping and other for design specs. Very inefficient.