Fraction of share keeps changing?

Iā€™m trying to buy 0.5 of a share. Not sure if itā€™s related but this works out at a value of around Ā£84. Every time I try to submit though, the proportion of the share changes to ā€œ~0.8236ā€ and I canā€™t reduce it. Any ideas whatā€™s going on?
1000035192

Hey, @LuketheFool :wave:

When you buy using a ā€˜Number of sharesā€™ type order, if the quantity you enter is too close to your total free funds, the order will be converted from ā€˜Number of sharesā€™ into aā€™ Valueā€™ order. This is done to protect you from buying more than you can afford in case the price goes up quickly.

In such cases, you can try setting a limit order for 0.50 shares with a limit price close to the current one. You can also try splitting the order in two - for example, you can try buying 0.25 shares, and placing another order for 0.25 shares right after the first one is executed.

Ah ok, makes sense although a warning sign would be useful. I tried reducing the fraction but it just started rounding down to zero instead. Iā€™ve now bought a dollar amount that is frustratingly close to, but not exactly, a nice round decimal, but itā€™ll do

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Frustratingly this continues to happen. I wanted to buy 0.25 shares, representing about 65% of my remaining balance, but T212 decided it had to buy 100% of my balance worth. Irritatingly I tried the confirm button by mistake but the current implementation is not doing what youā€™re intending it to do