Despite common knowledge, vowel harmony is a phenomenon sought and observed ONLY in suffixation in Turkish. There are two cases where a normally harmonizing suffix would break the rule:

(i) The vowel of a suffix may become harmonized as a front vowel even where a loanword does not have a front vowel in the last syllable:

"hakikat-siz" (without truth) – "disloyal" "bahs-i" (the topic, accusative) – "the topic" "harb-in" (of the war, genitive) – "of the war" "kalp-ler" (hearts, plural) – "hearts"

(ii) This regularly occurs in loanwords that end in a palatal 'l':

"gol-ü" (his/her goal, third person singular possessive) – "his/her goal" "sol-ün" (of the ‘note G’) – cf. "sol-un" (of the left) "etol-den" (from the scarf, ablative) – "from the scarf" "hal-im" (my condition, first person singular possessive) – "my condition"