I came across this example about "けど":
野菜{やさい}は好{す}きじゃないだけど体{からだ}にいいから食{た}べる。
This example feels wrong to me because the "だ" before "けど" doesn't have to be there; indeed there is already "じゃない". Can someone can confirm that for me?
By extrapolating is it true that putting "だけど" (or ですけど、だが、ですが) instead of "けど" (or が) after a "conjugated" adjective (しずかだっただけど...,しずかじゃありませんだけど..., おもしろくないだけど..., おもしろかっただけど..., おもしろかったですだけど...) is wrong ?
Thanks you in advance for your help !