I am a GBP based investor but I have a CHF call account. To enter this onto my portfolio, I use the symbol CHFGBP=X
However the portfolio view only quotes to 2 dp but the market trades to 4dp. So, at the time of writing the market quote is 0.8817 but it is displayed as 0.88
In addition the market value of my holding (in Sterling) is quoted to 4dp but Pounds and Pence should be to 2dp.
Whilst you might think that this is an esoteric request, it will apply to any account owning non base currency cash