Here are some of them:
1. When trying to write a video onto a file that's in read-only, there's no "Try again" option; it just fails and the user has to start all over again.

User error, don't try to render to a file that's read only.

2. After a failed render or after another edit, the name of the file previously entered is gone and the user has to enter it again.

Oh dear, is it that hard to copy paste.... Why the failed render..? User error, poor hardware ?

3. Clicking "Close program" by mistake and then clicking the window’s X (expecting to cancel) closes the application anyway. This is diabolical.

User error, don't click "Close program" by mistake.

4. Exporting with custom frame dimensions requires far too many clicks. Simply enable the Width and Height fields by default and, when you enter a number, it automatically jumps the "Frame size:" field to (Custom frame size).

I guess you want it to read your mind.

5. What in god's name is going on when you're using the mouse-wheel to zoom out of the video preview? The camera position jumps all over the place.

No problem here, (9:16 is awkward tho)

6. Handling video clips that are on top of each other is quite frustrating. If two clips are on top of each other the "fx" and "..." menus for one of the tracks often just disappear and it's impossible to select the clip underneath.

Why do you put videos on top of each other? There's an option called Takes.

7. Many UI elements that adjust rectangles (masking, pan/crop, event position) resize symmetrically around a center point instead of just moving the edge selected. This makes applying a mask (or any other action involving this UI) very cumbersome. The UI to adjust the clip position in the Video Event FX UI... I don't even know.

Picture in Picture, masking & Pan/Crop will resize around the centre, grab the corner points or highlight the 'Size About Centre' in Pan/Crop.

8. This is a big one: The mouse-wheel zooms in on the timeline at the playback position instead of the mouse-cursor. This is one of the most infuriating things about navigating Vegas Pro.

That's a positive to me not a negative, I don't want to have the timeline zoom relative to my mouse cursor, that'd be a pain having to position the mouse before zooming.

Again, this is about removing entirely unnecessary friction from the user experience without sacrificing any of Vegas Pro's power. I don't believe that these are intentional design choices, so I am wondering how some of these haven't had the necessary priority to be addressed in all the time Vegas Pro has been on the market and why its users are ok with them not being fixed.

Learn to use the software.

I apologize if this seems harsh but this is prob 'why its users are ok with them not being fixed'

Well explained @Gid 👍

User error, don't try to render to a file that's read only.

That's the most moronic take I've read in a long while.

I guess you want it to read your mind

No, I want it to not waste my time.

I guess I see the problem now and why these issues are not being fixed. Its user base is made up of elitists who take pride in being able to cope with terrible UI. Thank you for the clarification!

Thanks for sharing your feedback. I haven't seen some of these brought up before.

I find zooming and moving around the timeline with a laptop touchpad unnecessarily difficult. With a mouse it's fine but sometimes I'm on the go without one. It could use a few extra tricks like support for 3 finger scroll, etc

8. This is a big one: The mouse-wheel zooms in on the timeline at the playback position instead of the mouse-cursor. This is one of the most infuriating things about navigating Vegas Pro.

There are many aspects of the VEGAS Pro UI that I think could be improved, but I have a different view on this particular point.

During editing, an editor’s attention is primarily focused on the playhead, not on the mouse position. Because of that, zooming the timeline around the playhead feels more natural and aligned with the actual editing workflow.

In my experience, mouse-cursor–based zooming (as seen in Premiere Pro) often interrupts the editing flow.

Zooming relative to the playhead provides a more intuitive and efficient editing experience.

Dude, read the manual and learn how to use the software properly.

8. This is a big one: The mouse-wheel zooms in on the timeline at the playback position instead of the mouse-cursor. This is one of the most infuriating things about navigating Vegas Pro.

There are many aspects of the VEGAS Pro UI that I think could be improved, but I have a different view on this particular point.

During editing, an editor’s attention is primarily focused on the playhead, not on the mouse position. Because of that, zooming the timeline around the playhead feels more natural and aligned with the actual editing workflow.

In my experience, mouse-cursor–based zooming (as seen in Premiere Pro) often interrupts the editing flow.

Zooming relative to the playhead provides a more intuitive and efficient editing experience.

I disagree vehemently, which means there should at least be a toggle for this.

Dude, read the manual and learn how to use the software properly.

Another one of those. "I had to climb over barbed wire to get to school; why should the youth from today climb over anything else?"

No amount of manual reading will make any of my points invalid. Here, in case you never experienced a program with a good UI (since they are quite rare these days). Notice how in Topaz Gigapixel, it didn't take me a million clicks to choose the image dimensions.

@martin-2098

1. Vegas doesn't create read-only renders. It warns you prior to rendering if an existing render with the same should be overwritten (which is not possible when you changed manually the read only flag). What should Vegas do in that case, overwrite your read-only file or just do not overwrite?

2. Give your project a name and Vegas renders a videofile with that name, no need to rename the render when a earlier render is failed or stopped.

3. When you click "Exit" what should Vegas do, ask you again if you really want to exit? Vegas already gives you the option to save/exit/cancel when changes have been made and not saved yet.

4. I'm not sure what you mean, for me video has almost always fixed resolutions like 1920x1080 or 3840x2160.

5. As preview zooms in/out at the mouse-cursor position in the preview, this is a wanted behaviour. To return to 100% press CTRL+NUM 1.

6. Not sure what is meant, use takes as mentioned by @Gid.

7. Works for me as expected.

8. For what reason should timeline zoom in on mouse-cursor position instead of playhead position. The playhead is my position of interest and shown in the preview.

Just proves the old adage, "You can please some of the people all of the time. You can please all of the people some of the time. But you can't please all of the people all of the time".

Just proves the old adage, "You can please some of the people all of the time. You can please all of the people some of the time. But you can't please all of the people all of the time".

No, it doesn't really. Many of the design decisions or lack thereof in Vegas Pro are objectively bad. You might not care, but I do. I think that if a company charges a lot of money for a piece of software, its users are entitled to them delivering the best user experience possible.