Sliding door wardrobes do tend to have performance issues attached to them both about the mechanisms breaking down and the perception that they are inclined to come off their tracks.

These wardrobes usually had mirror panels in metal frames that clipped together in the corners and the earlier models were generally 'top-hung' in that the rollers were fitted to the top corners and ran un a track suspended from the ceiling.

The problems largely arose from the frames coming apart at the corners under the weight of the glass panels, the lightweight roller mechanisms breaking down or the tracks pulling away from the ceiling with the effect that the doors jammed in the bottom tracks.

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The harassed user, trying to dress for work would tend to force the jammed door along its track and the whole installation started to disintegrate. The manufacturers quickly redesigned the sliding door systems to have the rollers at the bottom of the doors and to run in the bottom tracks.

This achieved some improvements in the durability of the doors, which now is in compression rather than suspension were less inclined to come apart but introduced a new problem of the doors jumping out of the tracks if they so much as ran over a sock.

Also, the ball bearing rollers at the bottom of the doors tended to clog with fluff (common enough at the bottom of a wardrobe), with the eventual result that they ceased to revolve and again the door tended to jump or jam.