IOS Combining Text Tread for same contact - Copy from an older question

Hey everyone,

So I updated my phone to iOS 13 recently and I noticed a change in the Messaging app.

Before updating, say I have co workers with a work phone (regular texts) and a personal iPhone (iMessage) The texts would show up separately in two messages.

Even if the person has two androids or any non iPhone. It would still show as two separate texts. So that way I know who I’m texting or at least know what we’re talking about on what phone.

But now, it seems that the iPhone messaging app has merge all those texts into one thread or text message. So that one contacts texts from say 2 phones or even 4, for example are all under one thread in the messaging app.

To summarize it, if I text Joe on his work phone all day about work stuff and then he turns it off and after a certain time I text his personal phone, but both would show up under one text message with all the messages from each number into one text.

I can select which number to text so I know what number I’m texting initially but the messages are all combined! So knowing which number you’re sending to isn’t a problem but RECEIVING from which number is completely gone.

Anyone else with this? Is it the iOS update or my phone? Or setting?

Thank you in advance!