I am using a software keyboard: https://www.sbl-site.org/Fonts/Bibli...wSILManual.pdf
I am using the SBL-Hebrew Hebrew font.
I am modifying a document that was created by someone else years ago. The SIL keyboard has several characters that are basically round circles with various Hebrew vowel points. I have successfully updated several table cells to present the vowel point, often with the circle. However, I have hit a weird problem.
I tried to put a specific Hebrew letter in the table cell, a waw. That is basically a vertical line with a dot at the top. That is one way to represent the Hebrew vowel Holem. There is another way to represent this vowel, which is a circle with a dot outside of it at about 11 o'clock (just to the left of the top of the circle).

Now, here is my specific problem with Word. I tried to delete the first character and the dot above it and then type in the correct character, the circle with a dot. No matter what I do, delete, cut, replace, etc., when I type in the correct character, the dot from the previous character appears as well. I cannot seem to get rid of it. I even tried typing the correct symbol on a blank document and pasting it where it ought to go. That did not work.
The dot to the right, which is seemingly left over from the first character I erroneously put it, cannot be touched. That is, with or without the waw, the dot that was above it cannot be selected, deleted, replaced or anything. I can't even move the cursor to the right spot to use a backspace.

I know that Hebrew is typed right to left, not left to right,a nd I have put SBL-Hebrew without the keyboard into several documents. I have never seen a table behave this way. I tried closing without saving but it remembered my first step, which was two characters, the waw plus dot and the circle plus dot when I start Word again. I've never seen a table cell behave like this. It's driving me crazy.

All I can see in the table properties is that the cells use center alignment and have a preferred size of 1.28'. While the table is to go from left to right, what I am typing is one-two characters that go right to left, which is working fine for letters around it.

Any suggestions please? Thanks.