Sisyphus.Cog$ ls -lh SpurWork64.* save/SpurWork64-*

-rw-r--r--@ 1 eliot  staff    28M Jan 18 12:47 SpurWork64.changes

-rw-r--r--@ 1 eliot  staff   1.6G Jan 18 12:48 SpurWork64.image

-rw-r--r--@ 1 eliot  staff    28M Jan 18 12:03 save/SpurWork64-2018-01-18.changes

-rw-r--r--@ 1 eliot  staff   1.5G Jan 18 12:03 save/SpurWork64-2018-01-18.image

I ran a space analysis and found that Bitmap and ByteArray were the top two, so I looked for large Bitmaps.  I found three that fit this criterion:

I inspected the three and did a chase pointers on one of them.  As I did that suddenly

a) the inspector on the Array became empty (still an array but zero elements)

b) the progress bar for Downloading FlexibleVocabularies-who.NN appeared

I interrupted this and did a very cursory stack examination. Some object had not understood isLiteral and from there what looked like an attempt to turn this stub into a real object caused FlexibleVocabularies-who.NN to start to download.

I threw away the debugger, ran the GC and suddenly all my free space was back.  So now on disc I have

What is going on here?  There seems to be a very bad storage leak.  Can we please discuss this?  This doesn't seem like healthy behaviour at all :-)