I noticed that Telegram desktop lost a great feature (or maybe was it a bug and it got fixed).
When you pressed Forward, and select a chat, you could go back and select another chat so you forward to it instead of the first. Now, the forward message stays in the first chat you visit.
Version 1.1.11 Alpha.
@DarthJahus Yes, this was changed intentionally.
You'll be able to click on the bar with forwarded messages and choose another chat for them.