Having the same issue. My file will allow me to create new art boards, and or drag a new art board. BUT it will always duplicate number 10 ( skipping over 9 ), duplicate number 12 ( skipping over 11 ), duplicate number 15 (skipping over 14). Does not seem to be related to the content in the file, I can lock the layers and the issue still occurs. Manually re-ordering or editing the names does not solve the issue. Deleting and recreating the art boards does not solve the issue. Saving as and creating a new file does not solve the issue. Staring over with a completely new file does not solve the issue.

Artboards and paste in place are a nightmare.

https://illustrator.uservoice.com/forums/601447-illustrator-desktop-bugs/suggestions/36451072-paste-in-place-does-not-work-properly

Stefania, a cool observation! Definitely a bug... I just think it night be a different bug. I suppose it should be reported separately. Can you do that, please?

OK, I just posted a comment and I noticed something odd in the video, so now I think I have found what action triggers this bug. Please watch (and wait for it): https://www.screencast.com/t/Xxugi3ai8LAQ

The issue I'm facing might be connected with this one. When I have multiple artboards and I start to rename them, sometimes, completely randomly, renaming one artboard, automatically renames the one above it ending up in two artboards with the same name. Look what happens here: https://www.screencast.com/t/ywyCAyfhEOH

There are two '26' artboard.
I can't find '25' artboard.

Quando temos muitas pranchetas, as vezes chega num limite em que alguns números se duplicam e não consigo exportar as pranchetas duplicadas

アートボードナンバー　96がなくて、97が重複
アートボードナンバー　113がなくて、114が重複しています。

Reset illustrator preferences can help!
Illustrator > Preferences > General > Reset Preferences > Restart
My Artboard numberings got fixed!! But adobe still gotta fix this issue asap

複数のアートボードをつくって作業していた
↓
保存してai閉じる
↓
ai開く
↓
アートボードが1つだけになっていて　「アートボード１」ではなくて「アートボード９」のみある状態。
↓
直前まではアートボード４までしか使っていなかった。９はどこから？なんで？

XY軸もずれて仕事に影響　困る。

これに限らず複数回起こっているバグ。
なおしてください

Document has 42 artboards in total and there are two sets with duplicate numbers I can't change. Very frustrating to see how long people have been flagging this for with no fix. It has messed up my exporting of logo files and meant I almost sent the wrong ones to a client!

This is still not fixed in 25.3.1 Very frustrating.

If i create a file with 50 artboards, numbering of 24 & 32 comes twice
& illustrator creates 50 artboards
it wont create page no. 22 & 31

Design on these duplicate artboards, are non exportable in JPEG format

アートボードの名称をきちんと連番にしないと画像等に書き出した際、めちゃくちゃな順番になってしまうのと、ファイル名も～のコピーのようなバカみたいな名前になるのが困るので、アートボードを一斉に連番でリネームできるようにしてほしい。

Here's a very simple test file. One current artboard, no layers, no objects in the file.
Draw a single rectangle, and convert it to an artboard. Instead of artboard #2, it will be #3.
Create another one and it will also be #3. If you create a 3rd one it will be #4.

画板有两个编号为39的 并无法导出其中一个。
画板37后新建直接为39 没有画板38。

When I create a document with 3 or more artboards it numbers the 3rd artboard as number 4, but it also numbers the 4th artboard as 4, so when exported to JPGs it doesn't save the 3rd one.

Reset illustrator preferences. Here is the navigation: Illustrator > Preferences > General > Reset Preferences. Press and hold Option+Command+Shift as you start Illustrator. There we go!

Have a report that it is not fixed in 25.2.3

Hi, I'm having a recurring bug on illustrator when I have a large amount of artboards. What happens is that illustrator will skip an dartboard number and duplicate another, for example (73, 75, 75, see attachment) That way when I export I end up missing an artbord file because illustrator only exported one of the 75s artboards. See in this case I have two artboard 67s, two 76s and no 74. This happens quite often as soon as I pass the 20ish mark of artboards in a file