Thank you aymz! It feels great having someone experience the same problem. Misery loves company. I encounter what is within your image, hundreds of times a day, it is brutally annoying. All too often, I am unable to copy a clip and paste said clip into a gap/clip that is between two other clips, even if the copy and the destination are the same duration, and were split at the same exact time. Instead of fitting like a glove, they do not fit period. I never had this exact issue with previous versions of Audacity because previous versions were moving everything to the right, a very tiny amount, that was so small, that there was no way to know until the tracks became unaligned! Previous versions were simply moving everything to the right to accommodate such a paste, yet Audacity would not notify the user that everything to the right moved by less than a sample, which is insane. That is the reason my tracks ended up unaligned on a regular basis with other versions. I was forced to place split lines every one, five, or ten minutes, as registry keys, on each track, depending on the size of a project, to keep everything aligned. My work would constantly be ruined by Audacity’s “move to accommodate” behavior, without the use of registry keys. The misalignments were so very subtle, way less than a single sample. NOTHING SHOULD MOVE, OR BE DENIED, WHEN A CLIP IS COPIED AND PASTED INTO A GAP/CLIP OF THE SAME SIZE! Apparently, the Audacity team finally took action to prevent everything after such a paste from being moved to the right, by locking the tracks, unless “editing a clip can move other clips” is selected. So, the coders gave tracks the ability to be solid and unwavering, instead of solving why everything to the right would be moved from a simple paste in the first place! Clearly there is a sample rounding issue, or “ghost slivers” are being left behind at the end of clips, preventing them clips from being pasted into gaps/clips properly. The root cause of this issue is that Audacity is more detailed than other audio editors. An Audacity user can select BETWEEN samples! And even with “Snap” on and set to “Samples”, many functions still begin or end BETWEEN samples, such as recording vocals, or recording from Youtube, or VLC. When such recordings are stopped, they do not end on the nearest sample, they more than likely land BETWEEN samples. This absurd and ridiculous BETWEEN behavior has been causing serious problems for years and I have a feeling that the coders have no idea what to do. Strangely, regarding such copy and paste denial situations, “generating silence” also does not work! If there is a sample rounding issue or a “ghost sliver”, then why would those two possible issues also prevent “generating silence” from happening? I suspect that the cause of these issues are thanks to multiple different rounding errors, which may be why nearly all clips show a “mirage sliver” of clip at the end of the clips at the right edge, depending on zoom factor, because the Audacity coders can’t even get the simple pixel math rounding perfected. So, there is a visual pixel rounding error that is annoying, and a sample rounding error that is destroying peoples work by moving everything at the right of a paste, to the right, or a users workflow is disrupted by preventing a paste period in the newer version. Instead of solving the problem, the coders made Audacity nearly impossible to use. Now, instead of simply copying and pasting like a normal person, I must copy, then grab the left edge of the clip that is at the right of the area I want to paste into, and drag it’s left edge to the right, just a little, then paste, then drag that same left edge back to where it was,… JUST TO PERFORM A SIMPLE COPY AND PASTE! Interesting that attempting to explain this issue is nearly impossible. My above text is full of the words “right” and “clip”, which are used in multiple different ways, which causes a reader confusion. Honestly, if I was a coder, and I was trying to destroy a program, this is what I would do to a program to destroy it. Another contributor to this problem is that Audacity, for some ridiculous reason, was designed to have gaps/empty spaces between each clip. And with that way of thinking, a finished project would look like a wall with random bricks missing. The ends of each clip would need to be repaired to prevent any pop/snap artifacts, and there would be no way to visually confirm that a clip was handled properly. The way I personally confirm that all of my audio has been handled properly is by not having clips. My final project is one solid clip on each track, so it looks nice and clean and solid. Solid means handled/done. Swiss cheese means there is work to do. The coders are designing Audacity based on the swiss cheese model. Thank you for your time!