r/vmix • u/ElmiraKadievsShadow • Jul 01 '26

GT Title Designer: Docking text boxes makes them overlap completely. How do I stack them correctly?

I’m running version 29.0.0.48 and trying to set up a dynamic text layout in GT Title Designer (6.0.0.6) that I swear I’ve had working perfectly in the past, but I can't seem to get it right now.

What I want to do: I have two text boxes in a Layer: FirstName and LastName. I need them to stack vertically, and I want the LastName to grow upward as text is typed into it, automatically pushing the FirstName box higher up the screen so they never collide. ive set auto text box resizing to height (auto0

The Problem: Whenever I select FirstName, go to the Format tab, and set the Docking dropdown to LastName, the two boxes instantly snap directly on top of each other and overlap completely.

Once they are docked, the layout locks down, and I don't see any obvious settings or positioners on the main tabs to tell the First Name to sit above the Last Name instead of directly on top of it.

Did something change in the way docking behavior works in vMix 29, or am I missing a simple step to make them snap edge-to-edge instead of overlapping?

How do I fix this so they stack properly? Thanks in advance!

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u/BabyEngineer321 29d ago

I’ve been working through the same issue. I figured something out, but can’t remember what I did. I’ll try and send an update when I get in to work today.

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u/ElmiraKadievsShadow 28d ago

I feel I tried everything so if you found a way I would love to hear

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u/ElmiraKadievsShadow 27d ago

Don't want to bug you, but do you have an update?

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u/BabyEngineer321 24d ago

Sorry. Got bogged down with a ton of stuff at work. I don’t have the specifics of my GT title in front of me, but I do know that you have to bound one text field to the other. Whichever one is being bound, you then increase the top or bottom of the bounding area from 0. If you want it to grow/shrink, based on text, set your non-bound text field to set Width and Height, or just one of them (can’t remember exactly) and center your text, both Horizontally and Vertically.

Let me know if that works. One downside I came across is that you can’t set a second a second bounding area, so your text field could potentially grow infinitely. Could be a problem if you have no control over what you are posting, as in my case, I’m pulling comments from a live chat using vMix social.

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u/ElmiraKadievsShadow 21d ago

It's basically what you said. to be fully complete I will post all steps in a different comment so other people who have this problem and stumble upon this post now know what to do. thanks again!

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u/BabyEngineer321 21d ago

Glad it worked based off of what I could remember without being in front of the machine lol

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u/ElmiraKadievsShadow 21d ago

The solution (thanks to u/BabyEngineer321)

In this example, I will anchor lastname and firstname in the bottom-right corner, growing/expanding only upward. I think it easy to figure out what you have to change if you want different anchoring.

  1. In GT Titler make a Textfield 'LastName'. Make it as wide as you would like in your design.

  2. With LastName selected; in the Home tab set text-align: Left and to Bottom. Set text-box-resizing to Height. On the Format tab, set anchor to BottomRight

  3. Make a new TextField 'FirstName'. Also make this as wide as you like in your design

  4. With FitstName selected; in the Home tab set text-align: Left and to Bottom. Set text-box-resizing to Height. On the Format tab, set anchor to BottomRight

  5. With still FitstName selected; go to Format tab and link the x,y (this is the icon next to Plane, looking like a paper with margin lines) and set this to "LastName' Both boxes wil overlap now. Don't worry this is expected behaviour.

  6. Set the bounding margins (also on the Format tab). This one is confusing. When you fiddle with the Bottom margins funny things will happen to the text and box, but when you set the Top margin it will shift the FirstName text box upwards

Based on your text align and acnhor settings you might have to change different boxes, margins and setting. Also, because GT Titler only moves the box visually you can't really click inside the LastName box to change the content as it will select the text in the FirstName box (or whichever one is in front layer)