HertogJan: I recently downloaded them due to them being flagged. When I checked my external disk, I noticed the file size differences. So I redownloaded both of them again today just to be sure. Still that same difference.
To be clear, I'm talking about the English installer for both games.
Elbart
noticed the same difference.
My old BASS installer is from 2013 and has the same MD5 as the GOGwiki is showing. I didn't bother to check LOTT.
According to MaGog, the [url=http://www.an-ovel.com/cgi-bin/magog.cgi?ver=453&scp=g&dsp=igfrD&ord=t0&flt=tcs~Beneath~gal~adv~&opt=&myf=SunApr191233232015_empty_MoArAVXZWpsjQ]English installer[/url] for
BASS is from Sun, 26 Jan 2014 23:13:16 GMT, and the [url=http://www.an-ovel.com/cgi-bin/magog.cgi?ver=453&scp=g&dsp=igfrD&ord=t0&flt=tcs~Temptress~gal~adv~&opt=&myf=SunApr191233502015_empty_RmgHZXe5QaJhY]one[/url] for
Lure of the Temptress is from Fri, 24 Jan 2014 03:15:12 GMT.
It's quite possible that these were silent updates back then.
I still doubt that the recent flags they got were about these updates, I think that
mrkgnao is right about the reason behind these flags.