this weapons say 4/7 collected but this 3 skins are based in the race of druid, and we cant unlock it in the druid this skins because each race have a basic skin

Artifact collection is not 100%, but we put it in there so people have an idea. Unfortunately at this time we aren't able to track them 100% because Blizzard hasn't flagged them as collectible yet until the 8.0.1 patch.

If you notice when you are on one class, it'll say all your classes have the exact same tints unlocked since the unlocks are based on current character.

searching in addons files i found what both weapons have listed all 7 tints in SourceDB.lua
bear: i(128821,g({n(-5200,g({artifact(121),artifact(264),artifact(265),artifact(266),artifact(267),artifact(268),artifact(269)},
cat:
i(128859,g({n(-5200,g({artifact(430),artifact(428),artifact(427),artifact(426),artifact(287),artifact(429),artifact(431)}

then you can´t add a filter for those skins like: only track artifact 429 if character is a tauren druid or only track artifact 121 if character is a night elf druid
only track to trolls http://wow.zamimg.com/uploads/screenshots/normal/539802.jpg
only track to taurens http://wow.zamimg.com/uploads/screenshots/normal/539801.jpg

This has been fixed for the next release. (1.5.7)

Druid base artifact appearances are now race-locked to their specific races to allow a druid of any race to complete their specific race's appearance. (as the others, being not account-wide, are unobtainable for them)

Thank you for your report. If you would like to double check my race-flags, you may use this Git to preview the change.

hi this still having a issue pre 1.5.8 show 4/7 now show 3/4 in guardian weapon; in feral weapon works good this patch
eddit: my character is a tauren

We're going to double check this issue real quick to see if we can reproduce the missing 1/4 on the Guardian Weapon. One of our devs has a druid they can check on.