Ubuntu 22.04.1 installation "forgets" to remove swap partition (of 16.04)

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Ubuntu 22.04 LTS will use swap partitions, or swap files (or both). Each has advantages & disadvantages, and some users will prefer to use one over the other. Some may prefer the swap partition to be auto-deleted, yet if it was deleted others would see that as a bug.

If you upgrade, you'll continue using the same method as you used before (ie. if using swap-partition, your system would still use that swap-partition).

As I understand it, you used a 'Replace partition' type of install, which won't make changes to other partitions. As a swap partition could be used by other OSes (non-Ubuntu's or other Ubuntu installs) your request for removal could break those other OSes, which I'd see as a bad move. I use swap partition myself so my swap partition can be utilized by my other installed OSes (as I dual boot).

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"As I understand it, you used a 'Replace partition' type of install, which won't make changes to other partitions. As a swap partition could be used by other OSes (non-Ubuntu's or other Ubuntu installs) your request for removal could break those other OSes, which I'd see as a bad move."

In my case, there was only 1 operating system (16.04) and 1 hard drive (with one root and one swap partition).
Most users would expect the Ubuntu installer to replace the entire hard drive. So the behaviour is surprising to say the least.

After installing 22.04, there was an EFI, the root and swap partitions - so the partitions were definitely changed.

If there are other Linux operating systems, you're right (to keep the swap partition).

The real problem in this case is: the installer says "I'll do it for you", but you don't know exactly what it will do.

It would be very helpful if the installer would show in detail which partitions it will change or create (with all details: type of partition table, size of partitions, file system, mount point, ...).
The display of the partitions "before" and "after" the installation (one above the other) would be very helpful - especially if it was also graphical (as it is already excellently solved for manual partitioning).
Currently, only a text message is displayed that lists partitions to be changed or created - without the necessary details.

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