Low-Readability Cyrillic letter tails in non-Slab versions

[VladWinner]

Iosevka version 7.0.0-preview.2

Without correction tail cannot form an independent rectangle, one of its vertices always located at part of letter that looks as not intended for tails. Current implementation slows down reading and recognition.
Already existed tails from Slab-based fonts looks viable and applicable for non-Slab versions of Iosevka.

Example for Ц ц (FontLab):

Another example for Ҭ ҭ (Word):

List of problematic glyphs:
/uni0414 Д
/uni0434 д
/uni0426 Ц
/uni0446 ц
/uni0429 Щ
/uni0449 щ
and other letters with tails from Basic and Extended Cyrillic (not sure that list is complete):
/uni04F6 Ӷ
/uni04F7 ӷ
/uni0496 Җ
/uni0497 җ
/uni049A Қ
/uni049B қ
/uni052E Ԯ
/uni052F ԯ
/uni04A2 Ң
/uni04A3 ң
/uni0524 Ԥ
/uni0525 ԥ
/uni04AC Ҭ
/uni04AD ҭ
/uni04B2 Ҳ
/uni04B3 ҳ
/uni0526 Ԧ
/uni0527 ԧ
/uni04B6 Ҷ
/uni04B7 ҷ
/uni04CB Ӌ
/uni04CC ӌ
Maybe this problem partially expands also to Latin letters.