[GNC] Transaction between stock account and non-default currency account looks OK from perspective of former, completely blank in latter, doesn't even ask for a conversion rate, doesn't allow setting one

[наб]

On Mon, Nov 10, 2025 at 05:52:33PM -0800, John Ralls wrote:
> > On Nov 10, 2025, at 11:54, наб <nabijaczleweli at nabijaczleweli.xyz> wrote:
> > Given the following scenario:
> > 1. unit of account PLN, root account in PLN
> > 2. stock account with let's-say-LTC
> > 3. bank/asset account in a non-PLN currency (let's say EUR)
> > 
> > Entering a transaction into the LTC account that looks like
> >  Sell: LTC -2 shares @ 360 zł = 720 zł total sell
> >  Buy:  EUR                      720 zł total buy
> > looks correct in the LTC account view,
> > but in the EUR account view it's all-0
> > (all splits are there, in a 3-split variant there's 3 splits.
> > but they're all 0).
> > 
> > The balance of the EUR account is unchanged by this transaction.
> > 
> > I am not prompted for a conversion rate.
> > Right-clicking -> Edit Conversion Rate is refused,
> > and gnucash tells me I can't be doing that.
> > 
> > As I hope is natural, a correct result would be
> > (a) to be prompted for the conversion rate (let's say 4zł=1€), and
> > (b) from the perspective of the EUR account, for the tx to look like
> >  Sell: LTC -180 €
> >  Buy:  EUR +180 €
> > (c) the balance of the EUR account increases by 180€ instead of by 0.
> > 
> > I reproed this on Debian gnucash 5.6-1~bpo12+1 and 5.13-1,
> > and on Win32 5.11.
> > 
> > I'm attaching screenshots as well as a reproducer reduced from my journal.
> > 
> > Reporting here since I'm seemingly forbidden from reporting on bugzilla.
> 
> You have to request an account, see  https://wiki.gnucash.org/wiki/Bugzilla#New_Accounts .
> But you have no bug to report, you just need to learn to use GnuCash correctly.
>
> > Please keep me in CC, as I'm not subscribed.
> 
> Turn on trading accounts and make the transaction look like the attached screenshot.

Thanks for the pointers, but what you're saying sounds to me like:
(a) gnucash should allow this without trading accounts but doesn't, or
(b) gnucash should have informed me that to support this transaction
    I need to turn on trading accounts but it didn't,
and both (a) and (b) sound like bugs to me. More likely (b).

I have, however, followed this, and entered the transaction as in
preenter.png, which, after pressing Enter (and fixing up a 0.01zł imbalance),
resulted in entered.png. Beside the precision loss, this looks correct.

I accidentally clicked on another transaction in this account
(between LTC and PLN, so no Trading account needed)
and gnucash claimed it was unbalanced (it wasn't);
after letting it balance the transaction automatically,
it added Trading:... splits to it as well.

Some follow-up questions, then, if you'd be so kind:
(a) when I have turned trading accounts on,
    will every transaction that isn't PLN/PLN be poisoned by them?
(b) if that is the case, how do I trigger this to autobalance every
    historical transaction?
(c) can I turn trading accounts off now and wait until I do another
    nonPLN/nonPLN trade to turn it on again to enter it,
    or will this break gnucash?

Thanks,
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