Round-core strings should not be cut before tuning up to pitch, and it’s a good idea to put a 90-deg kink in the string above the tuner post but below the cut. This prevents the windings loosening on the core-wire.

Newtone strings (which are made in the UK by a small business in Nottinghamshire, are one-third the price of TI strings, and are amongst the best, if not the best, strings on the market) are similarly round-core, and this point is clearly set out on their packaging.

IMHO. YMMV.