TypeORM relationquerybuilder of remove with Not(IsNull()) not removing anything

Question

Good day everyone,

I ran into a strange problem with typeORM. I have a many-to-many relation on Offer with User named pending, which creates a table offer_pending_user that looks like:

userId	offerId
0	1
1	0

I basically want to completely clear this table. I tried to achieve this by using the RelationQueryBuilder like follows:

await Offer.createQueryBuilder()
    .relation("pending")
    .of({ id: Not(IsNull()) }) //offer id
    .remove({ id: Not(IsNull()) }); //user id

For some reason. It does not clear the offer_pending_user table at all. The query that it is executing looks like:

DELETE FROM "offer_pending_user" WHERE ("offerId" = ? AND "userId" = ?) -- PARAMETERS: 
[{
  "_type":"not",
  "_value": {
    "_type":"isNull",
    "_useParameter":false,
    "_multipleParameters":false
  },
  "_useParameter":true,
  "_multipleParameters":false
},{
  "_type":"not",
  "_value": {
    "_type":"isNull",
    "_useParameter":false,
    "_multipleParameters":false
  },
  "_useParameter":true,
  "_multipleParameters":false
}]

I would like to use this RelationQueryBuilder, and would like to know what I'm missing here.