Agilex 7 HBM2E burst length

I noticed that I can use a burst length of 1 (arlen/awlen = 0). But the datasheet says "In BL8 mode, the HBMC supports only a burst length of 2 for write and read transactions. If you issue a burst length of 1 in BL8 mode, you will see bresp="10"(SLVERR).". Is the datasheet outdated (for version 25.1.1, didn't find one for 25.3.1 which I'm currently using), or is this undocumented and I shouldn't do this? Would make programming easier, if also burst length 1 is supported.